Skip to content

Heavy 16 Roots – 2.5 Gallon





SKU: NUT-H16-R250

Heavy Roots is a revolutionary additive designed to enhance the rhizosphere on all levels. As always, Heavy 16 has packed multiple functions into one bottle while keeping it free from any yield- or quality-depleting hormones. With this philosophy in mind, we created a root promoter, root protector, drip cleaner, and antiprecipitate all in one. Roots can be used from the cloning phase continuously until the last week before harvest. You simply add Heavy Roots to your reservoir at 1mL per gallon before your normal additive and nutrient regimen to reap the benefits.

  • Guaranteed Analysis: 0.7-1-2
  • Root growth supplement
  • Size: 2.5 gallon

Only 2 left in stock

Your Garden's Success is our #1 Priority

HTG Supply is committed to providing you with the very best products, pricing and service in the industry. We will ship your order fast and discreetly packaged to protect your privacy. Buy with confidence knowing your HTG Supply purchase includes simple returns as well as lifetime product support. Call our team of real growing experts with your purchasing or product use questions, and we will be here to help!

See it for less somewhere else? Give us a call and we’ll beat any online competitor’s price!

Customer Service:  1-866-710-GROW (4769) | | Hours: Mon-Fri 9:00 a.m. to 5:00 p.m.


Heavy 16 Roots Plant Additive

As a root promoter, Heavy Roots will increase both the branching of lateral roots and the quantity and size of the true absorption zone, the root hair. Root hairs are very fragile, yet they supply the tremendous surface area needed to absorb significant amounts of water and nutrition. As more root hairs spawn, your plants are ensured a faster and more integrated rate of development. Faster plant development protects against production mishaps like missed irrigations while increasing the rate of maturity. As a root protector, Heavy Roots will give the plant a complex layer of systemic acquired resistances (SAR). The plant becomes more resilient against fungal pathogens as well as insects. The changes manifest as larger shoot diameters, larger leaf surfaces, and darker colors, all of which contribute to significant increases in yield (and protect the plant). As an added bonus, we incorporate other pathogen-suppressants to maintain optimum root health while also having the power to disinfect unhealthy root material.

As a drip cleaner (and anti-precipitate), Heavy Roots protects against lockout caused by poor water or base nutrients, exotic nutritional programs, or faulty mixing methods. Heavy Roots will also keep your equipment and media free from salt buildup and scale. Your best practice is to add Heavy Roots first to the reservoir to allow the chemistry to “open” the water. Heavy Roots will prevent the formation of insoluble or unavailable precipitates when mixing with “hard” water and will keep calcium from becoming a limiting factor. When used with pure filtered water, Heavy Roots allows for a whole new level of availability, plus the ability to mix nutrients that normally would precipitate and fall out of solution.


  • A custom blend of ammonium nitrate and potassium polyphosphate.
  • Increases root growth, vigor, and mass.
  • Anti-precipitate drip and line cleaner chemistry

Guaranteed Analysis:


Derived from ammonium nitrate and potassium polyphosphate

Heavy 16 Official Feed Schedule

Weight 26.13 lbs
Dimensions 6.5 × 8.8 × 14.5 in


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.