Heavy 16 Fire Nutrient

Fire


  • Improves overall plant nutrition
  • Improves soil/nutrient conditions for better crop yield
  • Provides organic matter
  • Improves soil conditions for increased plant vigor

NUTRIENT CALCULATOR
FOLIAR CALCULATOR

Heavy Fire

available sizeS

  • 500ML – $68.24
  • 1L – $116.02
  • 4L – $334.42
  • 10L – $682.49
  • 23L – $1,364.99
  • 55L – $2,729.99
  • 208.2L – $7,780.49

Fire Details

• Improves soil nutrient conditions for better crop yield
• Phosphite
• 3 forms of available Phosphorus
• 3 forms of available Potassium
• 2 types of cold processed seaweed: Ascophyllum nodosum and Laminaria japonica

heavy 16 – fire

Heavy Fire represents the ultimate hand-crafted P/K booster created through strict adherence to nutritional chemistry and biological principals. Heavy Fire is a versatile bloom supplement that can, because of its ingredients, be incorporated into any existing plant system and nutrient program. Starting Heavy Fire in the last one to two weeks of Veg and going through the entire bloom cycle with a gradual ramp will provide you pre-bloom support and will supply intermediate and late-phase cascading delivery of Phosphorous. Also, running Heavy Fire in the late phase of veg can provide for a larger, more resilient root mass, and create larger, and more branched foliage.

Heavy Fire is formulated in a method that brews the material instead of just simply blending it. Natural aging times and subsequent homogenization of both virgin minerals with hand selected ultra-fine ingredients make Heavy Fire become a chemistry all its own. This combination of ingredients and blending procedures creates a perfect balance between plant nutrition and supplementation from one bottle, allowing the grower to simplify their nutrient regimen while achieving the true quality their plants genetics code for.

With high analysis of P/K equivalents as the baseline, we use three forms of Phosphorous including the highly effective form Phosphite (PO3) as well as three forms of Potassium. Nitrogen is added in the Ammonium form to facilitate Phosphorous uptake and assimilation. We then combine our premium cold processed kelp mix (Ascophyllum nodosum and Laminaria japonica) to supply nutrients that support the natural blooming process.

 

Heavy Fire Safety Data Sheet (SDS) 

 

  • 🧪 Decades in the making, engineered for results!

Heavy 16 isn’t just another nutrient line — it’s the product of a lifelong obsession with plant science, agricultural chemistry, and horticultural efficiency. Born in the gardens of Southern California and refined with careful field testing, our formulas were originally developed to meet the real-world demands of high-performance growers.

Every product in the Heavy 16 lineup was built from the ground up with:

⚗️ Pharmaceutical-grade raw materials for superior uptake
🧬 Multi-path nutrient delivery systems for redundancy and resilience
🧫 Micro-batch production for full-spectrum quality control
🧠 Intelligent ratios of macro/micronutrients, chelators, and biological co-factors

We spent years field-testing with top-tier California farmers — tuning and retuning until every bottle was dialed for maximum translocation, consistency, and performance.

The result? A lean, efficient, highly concentrated nutrient system that gives you all the complexity of modern plant science — in a format that’s easy to run, easy to scale, and ridiculously effective in flower.

We don’t do hype. We do real R&D — and the difference is in the yield 🤌

#HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
  • More than just a root promoter! 💦

As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿

As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜

As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧

#GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
  • Picking up only the best 😎🤘

Veg A&B delivers balanced macros + micros, multiple forms of nitrogen and calcium, and a steady nutrient release that builds strong roots, thick tissue, and a resilient structure that can handle high light and CO₂ 🌿

Bud A&B picks up right where Veg leaves off, pushing density, oil production, and overall quality with highly bioavailable P/K, premium chelators, and elevated trace elements for a true top-shelf finish 🚀

Both are crafted with HEAVY’s premium raw inputs and micro-batch blending, giving you a clean, powerful, streamlined base that works in hydro, coco, or soil — without complicating the feed chart 🤟

Use Veg A&B + Bud A&B as your foundation, stack your favorite HEAVY additives, and you’ve got everything your plants need from start to finish! 👊

Video: @mrcalibear
  • HEAVY is here to bring your garden to the next level 🚀

The HEAVY lineup was created with both science and growers in mind — leaning on simplicity of use, without sacrificing the complex chemistry that sets our lineup apart 🧪

Kick things off with Veg A&B — balanced macros/micros + multiple calcium and nitrogen sources that build strong structure and vascular strength from day one. Pair it with Prime to boost microbial life, improve soil chemistry, and elevate brix, aroma, and overall plant vigor.

As bloom begins, Bud A&B steps in with fast-acting P/K and enhanced trace elements for dense, high-quality flowers. Layer in Fire for a powerful late-phase P/K ramp that drives heavy stacking, resin, and true genetic expression.

Support the whole run with Foliar for direct leaf-fed calcium and micros, helping with tissue strength and stress resistance. Then close the cycle cleanly with Finish — restoring medium balance, flushing excess salts, and sharpening color, aroma, and final weight.

Strong start. Stronger finish. 💪

#HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
  • 🐱 Something about HEAVY has this shop cat interested!

Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝

(P.S. if this is your cat, let us know! We’ve been looking for the source 🔍)

#HEAVY16 #GetBigGetHEAVY
  • Riding in style 😎🤟

Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝

#Heavy16 #Heavy16Nutrients #Heavy16Fam #GetBigGetHeavy
  • Running HEAVY will have you feeling like a king 👑😎

Lil throwback shot from the folks over at @greencoasthydro_lax 💪
  • Monster root growth and rhizosphere health 💥

As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿

As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜

As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧

#GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
  • No need to pH when you’re running HEAVY 💪

PRIME, our centerpiece, sets the pH for you via complex organic acids! If your water source is roughly between 5.5 and 8.0 on pH scale, PRIME’s complexion will naturally titrate pH, eliminating the need for hard acids in the garden 🌱

One less step in your routine so that you can spend time where it matters most! 😎

#HEAVY16 #HEAVY16Official #TheMoreYouKnow #GrowYourOwn #BigYields
  • Need some tips on how to use HEAVY Foliar? You came to the right place! 📝

HEAVY FOLIAR is highly versatile and can be used alone or with other products. Mixing HEAVY FOLIAR with HEAVY ROOTS and HEAVY FIRE allows a for a comprehensive nutritional delivery in both phases of plant development. HEAVY FOLIAR can be mixed with pesticides, fungicides, soaps or oils.

We recommend spraying every three days for optimal nutrition uptake. If you prefer to spray every day, we recommend using the HEAVY FOLIAR recipe at half strength. For best results, spray your crop from seedling up until the fourth week on flowering crops. Please note that there is no need to adjust the pH of the FOLIAR formula after mixing, but that FOLIAR should be sprayed within three days of mixing!

🌿 Mix HEAVY FOLIAR with water, adding HEAVY16 Products in order as listed on the schedule on our website

🌿 Lightly mist plants every 3 days during foliar periods. Avoid drenching foliage.

🌿 You can spray HEAVY FOLIAR lights on or off; our recommendation is to spray at first light.

🌿 Do not adjust pH of FOLIAR mixture.

🌿 Use FOLIAR mixture within 3 days of dilution with water.

🌿 An oily sheen on leaves is normal.

#HEAVYFoliar #FoliarSpray #HEAVY16 #HEAVY16Nutrients #GrowWithHEAVY
🧪 Decades in the making, engineered for results! Heavy 16 isn’t just another nutrient line — it’s the product of a lifelong obsession with plant science, agricultural chemistry, and horticultural efficiency. Born in the gardens of Southern California and refined with careful field testing, our formulas were originally developed to meet the real-world demands of high-performance growers. Every product in the Heavy 16 lineup was built from the ground up with: ⚗️ Pharmaceutical-grade raw materials for superior uptake 🧬 Multi-path nutrient delivery systems for redundancy and resilience 🧫 Micro-batch production for full-spectrum quality control 🧠 Intelligent ratios of macro/micronutrients, chelators, and biological co-factors We spent years field-testing with top-tier California farmers — tuning and retuning until every bottle was dialed for maximum translocation, consistency, and performance. The result? A lean, efficient, highly concentrated nutrient system that gives you all the complexity of modern plant science — in a format that’s easy to run, easy to scale, and ridiculously effective in flower. We don’t do hype. We do real R&D — and the difference is in the yield 🤌 #HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
1 week ago
View on Instagram |
1/10
More than just a root promoter! 💦

As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿

As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜

As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧

#GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
More than just a root promoter! 💦 As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿 As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜 As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧 #GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
1 week ago
View on Instagram |
2/10
Picking up only the best 😎🤘 Veg A&B delivers balanced macros + micros, multiple forms of nitrogen and calcium, and a steady nutrient release that builds strong roots, thick tissue, and a resilient structure that can handle high light and CO₂ 🌿 Bud A&B picks up right where Veg leaves off, pushing density, oil production, and overall quality with highly bioavailable P/K, premium chelators, and elevated trace elements for a true top-shelf finish 🚀 Both are crafted with HEAVY’s premium raw inputs and micro-batch blending, giving you a clean, powerful, streamlined base that works in hydro, coco, or soil — without complicating the feed chart 🤟 Use Veg A&B + Bud A&B as your foundation, stack your favorite HEAVY additives, and you’ve got everything your plants need from start to finish! 👊 Video: @mrcalibear
2 weeks ago
View on Instagram |
3/10
HEAVY is here to bring your garden to the next level 🚀

The HEAVY lineup was created with both science and growers in mind — leaning on simplicity of use, without sacrificing the complex chemistry that sets our lineup apart 🧪

Kick things off with Veg A&B — balanced macros/micros + multiple calcium and nitrogen sources that build strong structure and vascular strength from day one. Pair it with Prime to boost microbial life, improve soil chemistry, and elevate brix, aroma, and overall plant vigor.

As bloom begins, Bud A&B steps in with fast-acting P/K and enhanced trace elements for dense, high-quality flowers. Layer in Fire for a powerful late-phase P/K ramp that drives heavy stacking, resin, and true genetic expression.

Support the whole run with Foliar for direct leaf-fed calcium and micros, helping with tissue strength and stress resistance. Then close the cycle cleanly with Finish — restoring medium balance, flushing excess salts, and sharpening color, aroma, and final weight.

Strong start. Stronger finish. 💪

#HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
HEAVY is here to bring your garden to the next level 🚀 The HEAVY lineup was created with both science and growers in mind — leaning on simplicity of use, without sacrificing the complex chemistry that sets our lineup apart 🧪 Kick things off with Veg A&B — balanced macros/micros + multiple calcium and nitrogen sources that build strong structure and vascular strength from day one. Pair it with Prime to boost microbial life, improve soil chemistry, and elevate brix, aroma, and overall plant vigor. As bloom begins, Bud A&B steps in with fast-acting P/K and enhanced trace elements for dense, high-quality flowers. Layer in Fire for a powerful late-phase P/K ramp that drives heavy stacking, resin, and true genetic expression. Support the whole run with Foliar for direct leaf-fed calcium and micros, helping with tissue strength and stress resistance. Then close the cycle cleanly with Finish — restoring medium balance, flushing excess salts, and sharpening color, aroma, and final weight. Strong start. Stronger finish. 💪 #HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
2 weeks ago
View on Instagram |
4/10
🐱 Something about HEAVY has this shop cat interested! Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝 (P.S. if this is your cat, let us know! We’ve been looking for the source 🔍) #HEAVY16 #GetBigGetHEAVY
2 weeks ago
View on Instagram |
5/10
Riding in style 😎🤟 Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝 #Heavy16 #Heavy16Nutrients #Heavy16Fam #GetBigGetHeavy
3 weeks ago
View on Instagram |
6/10
Running HEAVY will have you feeling like a king 👑😎

Lil throwback shot from the folks over at @greencoasthydro_lax 💪
Running HEAVY will have you feeling like a king 👑😎 Lil throwback shot from the folks over at @greencoasthydro_lax 💪
3 weeks ago
View on Instagram |
7/10
Monster root growth and rhizosphere health 💥

As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿

As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜

As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧

#GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
Monster root growth and rhizosphere health 💥 As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿 As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜 As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧 #GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
3 weeks ago
View on Instagram |
8/10
No need to pH when you’re running HEAVY 💪

PRIME, our centerpiece, sets the pH for you via complex organic acids! If your water source is roughly between 5.5 and 8.0 on pH scale, PRIME’s complexion will naturally titrate pH, eliminating the need for hard acids in the garden 🌱

One less step in your routine so that you can spend time where it matters most! 😎

#HEAVY16 #HEAVY16Official #TheMoreYouKnow #GrowYourOwn #BigYields
No need to pH when you’re running HEAVY 💪 PRIME, our centerpiece, sets the pH for you via complex organic acids! If your water source is roughly between 5.5 and 8.0 on pH scale, PRIME’s complexion will naturally titrate pH, eliminating the need for hard acids in the garden 🌱 One less step in your routine so that you can spend time where it matters most! 😎 #HEAVY16 #HEAVY16Official #TheMoreYouKnow #GrowYourOwn #BigYields
4 weeks ago
View on Instagram |
9/10
Need some tips on how to use HEAVY Foliar? You came to the right place! 📝

HEAVY FOLIAR is highly versatile and can be used alone or with other products. Mixing HEAVY FOLIAR with HEAVY ROOTS and HEAVY FIRE allows a for a comprehensive nutritional delivery in both phases of plant development. HEAVY FOLIAR can be mixed with pesticides, fungicides, soaps or oils.

We recommend spraying every three days for optimal nutrition uptake. If you prefer to spray every day, we recommend using the HEAVY FOLIAR recipe at half strength. For best results, spray your crop from seedling up until the fourth week on flowering crops. Please note that there is no need to adjust the pH of the FOLIAR formula after mixing, but that FOLIAR should be sprayed within three days of mixing!

🌿 Mix HEAVY FOLIAR with water, adding HEAVY16 Products in order as listed on the schedule on our website

🌿 Lightly mist plants every 3 days during foliar periods. Avoid drenching foliage.

🌿 You can spray HEAVY FOLIAR lights on or off; our recommendation is to spray at first light.

🌿 Do not adjust pH of FOLIAR mixture.

🌿 Use FOLIAR mixture within 3 days of dilution with water.

🌿 An oily sheen on leaves is normal.

#HEAVYFoliar #FoliarSpray #HEAVY16 #HEAVY16Nutrients #GrowWithHEAVY
Need some tips on how to use HEAVY Foliar? You came to the right place! 📝 HEAVY FOLIAR is highly versatile and can be used alone or with other products. Mixing HEAVY FOLIAR with HEAVY ROOTS and HEAVY FIRE allows a for a comprehensive nutritional delivery in both phases of plant development. HEAVY FOLIAR can be mixed with pesticides, fungicides, soaps or oils. We recommend spraying every three days for optimal nutrition uptake. If you prefer to spray every day, we recommend using the HEAVY FOLIAR recipe at half strength. For best results, spray your crop from seedling up until the fourth week on flowering crops. Please note that there is no need to adjust the pH of the FOLIAR formula after mixing, but that FOLIAR should be sprayed within three days of mixing! 🌿 Mix HEAVY FOLIAR with water, adding HEAVY16 Products in order as listed on the schedule on our website 🌿 Lightly mist plants every 3 days during foliar periods. Avoid drenching foliage. 🌿 You can spray HEAVY FOLIAR lights on or off; our recommendation is to spray at first light. 🌿 Do not adjust pH of FOLIAR mixture. 🌿 Use FOLIAR mixture within 3 days of dilution with water. 🌿 An oily sheen on leaves is normal. #HEAVYFoliar #FoliarSpray #HEAVY16 #HEAVY16Nutrients #GrowWithHEAVY
4 weeks ago
View on Instagram |
10/10

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