Nutrients that help your plants grow big and strong!

Shopping for nutrients and additives for your grows can be dizzying. If you’re looking for customer-vetted and grower-vetted hydroponic and soil additives and nutrients of the highest quality, this article will make your search a little easier.

Grow Supply Shop only sells what its growing experts have vetted themselves. Granted, we sell a ton of products in the nutrients and additives categories. You won’t get our entire catalog here, but you will get the skinny on some of the products that have the most enthusiastic fan bases among growers.

Furthermore, if you find any of these items for a lower price anywhere else online, let us know. We will beat that price.


Humboldt County’s Own Starter Pack


In the nutrients and additives industry, starter packs are normally like sampler packs. You get a little bit of everything.

Humboldt County’s Own has changed that. Their starter pack features retail-size bottles.

Better yet, if you check out online reviews of Humboldt County’s Own products, you’ll see that they have a big following of people who are more than happy to rate them five stars and rave about them.

The starter pack includes:

  •         Complete Product Catalog
  •         Feeding Schedule
  •         Killer Tea (beneficial bacteria & full potency growth factors)
  •         Deep Fusion Grow (stimulates leaf & branch growth with molasses & kelp)
  •         Deep Fusion Micro (supplies calcium, nitrogen, micronutrients & trace elements)
  •         Deep Fusion Bloom (increases bud mass, stimulates fragrance with phosphorus & potassium)
  •         Magnum (8 oz) (boosts chlorophyll & boosts yield with magnesium)
  •         G10 (makes buds massive with kelp extract & a formula based on lots of field testing)
  •         Deep Breath (Decreases vegetative time & accelerates flower growth)
  •         Snow Storm (increases resins, terpenes & oils & prevents accidental pollination)
  •         Sonic Bloom (100g) (increases bud size & mass with vitamin B1 & other vitamins)




Snoop’s Premium Nutrients Hyzyme


Legendary rapper Snoop Dogg first founded his cannabis nutrient company by contacting scientists who could help formulate high-quality products for boosting yield in hydroponic grows.

Hyzyme is one of Snoop’s more popular products. It’s an enzyme formulation that accelerates decomposition of roots that are dying or already dead. Dead roots attract and multiply bacteria that can endanger the rest of the plant.




Bud Builder 100 Protein Blend


This is the most concentrated and economical plant protein blend you can find anywhere. It boosts both photosynthesis and metabolic growth.

You can spray the surfaces of the plants or add it to soil or hydroponic solution. One application is good for about two weeks.




NPK Industries ALL BLOOM: all-in-one


NPK has a cult following that just may rival L. Ron Hubbard. RAW BLOOM: all-in-one is a fertilizer you can use during the entire flowering stage.

From NPK’s website:

“RAW BLOOM is a tested blend of all 12 RAW Soluble plant nutrients, essential elements and supplements. This blend has been proven to be an optimal all in one base “Bloom” horticultural fertilizer. RAW BLOOM is used throughout the entire flowering stage. Derived from: Plant protein hydrolysate, mono potassium phosphate, potassium sulfate, cane molasses, sodium borate, iron DTPA, magnesium sulfate, manganese sulfate and natural volcanic ash. Also contains non-plant food ingredients: Humic acids derived from leonardite and peat, kelp (ascophyllum nodosum), silicon dioxide derived from diatomite and yucca extract.”




NPK Industries RAW GROW: all-in-one


This formula contains the same ingredients as RAW BLOOM, but it is made for use during the vegetative stage. Different stages require different nutrient ratios.






Your girls need beneficial bacteria and fungi to grow properly and produce a happy harvest. This formula is for the grow and vegetative stages. The microbes are selected to promote root growth and nutrient availability.

NPK double tests this formulation for microbe count, species ratio, and purity. That way you know you’re getting a top-quality product.




DYNA-GRO Foliage-Pro 9-3-6 Plant Food


This is a complete liquid nutrition formula that is high in nitrogen and low in phosphorus. It also includes essential minerals plants need for “vigorous growth.” It’s highly concentrated as well. ¼ teaspoon is enough to create a gallon of solution.

DYNA-GRO spent 10 years developing it through rigorous field and lab testing.




BioBizz Fish-Mix


Everyone knows fish make great fertilizer. This liquid mixture boosts the growth of the bacterial flora and microorganisms you need in your soil or coco. It works for all soil types.

The formulation contains North Sea fish and Dutch sugar beet extract.

BioBizz’s entire line of products is free from all artificial chemicals. Like NPK and Humboldt County’s Own, they have very loyal base of raving fans.




BioBizz Root-Juice


This liquid adds vigor to root growth and promotes healthy microorganisms and plant immune systems. Root-Juice not only aids root development. It also stimulates the growth of plants that have already developed their roots. Either way, it is a great way to boost nutrient absorption.

It works for coco, soil, hydroponic, and aeroponic grows. If you promised your hydro roots total protection, give them Root-Juice. They will thank you for it. 




Hesi PK 13/14 (Phosphorus & Potassium)


Hesi developed this product to supply all the phosphorus and potassium your girls need during the second half of the flowering stage. Begin using it then and continue until just before the end of the cycle.




Talk to an Expert Grower


If you have any questions about your grow, call or text us. We don’t just sell growing supplies. We use them, too. We’re growers!

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