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Nutrients & Additives

Give your crops the high-quality plant nutrients they need for robust development and greater yields. Hydrofarm offers a comprehensive selection of premium fertilizers and additives for hydroponic, greenhouse, and indoor commercial operations.



Grotek Monster Grow Pro, 500 g
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 500 g
SKU:
GTMG6030
SRP: $45.99
Grotek Monster Grow Pro, 130 g
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 130 g
SKU:
GTMG6020
SRP: $13.15
Grotek Monster Grow Pro, 2.5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 2.5 kg
SKU:
GTMG6040
SRP: $211.99
Grotek Monster Grow Pro, 5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 5 kg
SKU:
GTMG6050
SRP: $368.99
Grotek Monster Grow Pro, 10 kg
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 10 kg
SKU:
GTMG6060
SRP: $692.99
Grotek Monster Grow Pro
Grotek Monster Grow Pro, 500 g
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 500 g
SKU:
GTMG6030
SRP: $45.99
Grotek Monster Grow Pro, 130 g
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 130 g
SKU:
GTMG6020
SRP: $13.15
Grotek Monster Grow Pro, 2.5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 2.5 kg
SKU:
GTMG6040
SRP: $211.99
Grotek Monster Grow Pro, 5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 5 kg
SKU:
GTMG6050
SRP: $368.99
Grotek Monster Grow Pro, 10 kg
Hydrofarm Brand:
Grotek
Grotek Monster Grow Pro, 10 kg
SKU:
GTMG6060
SRP: $692.99
Grotek Monster Bloom, 130 g
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 130 g
SKU:
GTMB6020
SRP: $13.99
Grotek Monster Bloom, 500 g
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 500 g
SKU:
GTMB6030
SRP: $45.99
Grotek Monster Bloom, 2.5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 2.5 kg
SKU:
GTMB6040
SRP: $211.99
Grotek Monster Bloom, 5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 5 kg
SKU:
GTMB6050
SRP: $397.99
Grotek Monster Bloom, 10 kg
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 10 kg
SKU:
GTMB6060
SRP: $747.99
Grotek Monster Bloom Pro
Grotek Monster Bloom, 130 g
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 130 g
SKU:
GTMB6020
SRP: $13.99
Grotek Monster Bloom, 500 g
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 500 g
SKU:
GTMB6030
SRP: $45.99
Grotek Monster Bloom, 2.5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 2.5 kg
SKU:
GTMB6040
SRP: $211.99
Grotek Monster Bloom, 5 kg
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 5 kg
SKU:
GTMB6050
SRP: $397.99
Grotek Monster Bloom, 10 kg
Hydrofarm Brand:
Grotek
Grotek Monster Bloom, 10 kg
SKU:
GTMB6060
SRP: $747.99
Grotek Pro-Silicate, 1 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 1 L
SKU:
GTPROS1L
SRP: $15.71
Grotek Pro-Silicate, 10 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 10 L
SKU:
GTPROS10L
SRP: $115.99
Grotek Pro-Silicate, 23 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 23 L
SKU:
GTPROS23L
SRP: $226.99
Grotek Pro-Silicate, 4 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 4 L
SKU:
GTPROS4L
SRP: $46.99
Grotek Pro Silicate
Grotek Pro-Silicate, 1 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 1 L
SKU:
GTPROS1L
SRP: $15.71
Grotek Pro-Silicate, 10 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 10 L
SKU:
GTPROS10L
SRP: $115.99
Grotek Pro-Silicate, 23 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 23 L
SKU:
GTPROS23L
SRP: $226.99
Grotek Pro-Silicate, 4 L
Hydrofarm Brand:
Grotek
Grotek Pro-Silicate, 4 L
SKU:
GTPROS4L
SRP: $46.99
Grotek Cal-Max, 1 gal
Hydrofarm Brand:
Grotek
Grotek Cal-Max, 1 gal
SKU:
GTCLMXGAL
SRP: $45.33
Grotek Cal-Max, 1 qt
Hydrofarm Brand:
Grotek
Grotek Cal-Max, 1 qt
SKU:
GTCLMXQT
SRP: $13.96
Grotek Cal-Max, 10 L
Hydrofarm Brand:
Grotek
Grotek Cal-Max, 10 L
SKU:
GTCM10L
SRP: $116.99
Grotek Cal Max
Grotek Cal-Max, 1 gal
Hydrofarm Brand:
Grotek
Grotek Cal-Max, 1 gal
SKU:
GTCLMXGAL
SRP: $45.33
Grotek Cal-Max, 1 qt
Hydrofarm Brand:
Grotek
Grotek Cal-Max, 1 qt
SKU:
GTCLMXQT
SRP: $13.96
Grotek Cal-Max, 10 L
Hydrofarm Brand:
Grotek
Grotek Cal-Max, 10 L
SKU:
GTCM10L
SRP: $116.99
Grotek Vitamax Plus, 1 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 1 L
SKU:
GTVMP6010
SRP: $24.99
Grotek Vitamax Plus, 4 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 4 L
SKU:
GTVMP6020
SRP: $88.99
Grotek Vitamax Plus, 10 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 10 L
SKU:
GTVMP6030
SRP: $166.99
Grotek Vitamax Plus, 23 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 23 L
SKU:
GTVMP6040
SRP: $399.99
Grotek Vitamax Plus
Grotek Vitamax Plus, 1 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 1 L
SKU:
GTVMP6010
SRP: $24.99
Grotek Vitamax Plus, 4 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 4 L
SKU:
GTVMP6020
SRP: $88.99
Grotek Vitamax Plus, 10 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 10 L
SKU:
GTVMP6030
SRP: $166.99
Grotek Vitamax Plus, 23 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Plus, 23 L
SKU:
GTVMP6040
SRP: $399.99
Grotek Vitamax Pro, 1 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 1 L
SKU:
GTVMPRO1L
SRP: $31.02
Grotek Vitamax Pro, 10 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 10 L
SKU:
GTVMPRO10L
SRP: $224.36
Grotek Vitamax Pro, 23 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 23 L
SKU:
GTVMPRO23L
SRP: $430.99
Grotek Vitamax Pro, 4 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 4 L
SKU:
GTVMPRO4L
SRP: $105.46
Grotek Vitamax Pro
Grotek Vitamax Pro, 1 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 1 L
SKU:
GTVMPRO1L
SRP: $31.02
Grotek Vitamax Pro, 10 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 10 L
SKU:
GTVMPRO10L
SRP: $224.36
Grotek Vitamax Pro, 23 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 23 L
SKU:
GTVMPRO23L
SRP: $430.99
Grotek Vitamax Pro, 4 L
Hydrofarm Brand:
Grotek
Grotek Vitamax Pro, 4 L
SKU:
GTVMPRO4L
SRP: $105.46
Grotek Bud Fuel Pro, 1 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 1 L
SKU:
GTBDF1L
SRP: $36.26
Grotek Bud Fuel Pro, 10 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 10 L
SKU:
GTBDF10L
SRP: $225.50
Grotek Bud Fuel Pro, 23 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 23 L
SKU:
GTBDF23L
SRP: $407.80
Grotek Bud Fuel Pro, 4 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 4 L
SKU:
GTBDF4L
SRP: $98.25
Grotek Bud Fuel Pro
Grotek Bud Fuel Pro, 1 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 1 L
SKU:
GTBDF1L
SRP: $36.26
Grotek Bud Fuel Pro, 10 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 10 L
SKU:
GTBDF10L
SRP: $225.50
Grotek Bud Fuel Pro, 23 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 23 L
SKU:
GTBDF23L
SRP: $407.80
Grotek Bud Fuel Pro, 4 L
Hydrofarm Brand:
Grotek
Grotek Bud Fuel Pro, 4 L
SKU:
GTBDF4L
SRP: $98.25
Grotek Blossom Blaster Pro Liquid, 1 L
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster Pro Liquid, 1 L
SKU:
GTBBPRO1L
SRP: $29.18
Grotek Blossom Blaster Pro Liquid, 10 L
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster Pro Liquid, 10 L
SKU:
GTBBPRO10L
SRP: $210.88
Grotek Blossom Blaster Pro Liquid, 4 L
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster Pro Liquid, 4 L
SKU:
GTBBPRO4L
SRP: $99.21
Grotek Blossom Blaster Pro Liquid
Grotek Blossom Blaster Pro Liquid, 1 L
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster Pro Liquid, 1 L
SKU:
GTBBPRO1L
SRP: $29.18
Grotek Blossom Blaster Pro Liquid, 10 L
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster Pro Liquid, 10 L
SKU:
GTBBPRO10L
SRP: $210.88
Grotek Blossom Blaster Pro Liquid, 4 L
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster Pro Liquid, 4 L
SKU:
GTBBPRO4L
SRP: $99.21
Grotek Gro-Silic, 1 L
Hydrofarm Brand:
Grotek
Grotek Gro-Silic, 1 L
SKU:
GTGS1L
SRP: $92.99
Grotek Gro-Silic, 10 L
Hydrofarm Brand:
Grotek
Grotek Gro-Silic, 10 L
SKU:
GTGS10L
SRP: $511.99
Grotek Gro-Silic, 4 L
Hydrofarm Brand:
Grotek
Grotek Gro-Silic, 4 L
SKU:
GTGS4L
SRP: $232.99
Grotek Gro-Silic
Grotek Gro-Silic, 1 L
Hydrofarm Brand:
Grotek
Grotek Gro-Silic, 1 L
SKU:
GTGS1L
SRP: $92.99
Grotek Gro-Silic, 10 L
Hydrofarm Brand:
Grotek
Grotek Gro-Silic, 10 L
SKU:
GTGS10L
SRP: $511.99
Grotek Gro-Silic, 4 L
Hydrofarm Brand:
Grotek
Grotek Gro-Silic, 4 L
SKU:
GTGS4L
SRP: $232.99
Grotek Blossom Blaster, 130 g
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster, 130 g
SKU:
GTBB130G
SRP: $70.66
Grotek Blossom Blaster, 2.5 kg
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster, 2.5 kg
SKU:
GTBB25G
SRP: $895.99
Grotek Blossom Blaster, 500 g
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster, 500 g
SKU:
GTBB500G
SRP: $256.99
Grotek Blossom Blaster
Grotek Blossom Blaster, 130 g
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster, 130 g
SKU:
GTBB130G
SRP: $70.66
Grotek Blossom Blaster, 2.5 kg
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster, 2.5 kg
SKU:
GTBB25G
SRP: $895.99
Grotek Blossom Blaster, 500 g
Hydrofarm Brand:
Grotek
Grotek Blossom Blaster, 500 g
SKU:
GTBB500G
SRP: $256.99
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Nutrients & Additives Resources

The Trusted Partner for Your Grow Operation

With over 40 years of expertise, Hydrofarm is the leading manufacturer and distributor for commercial growers and retailers. We provide cost-effective, premium-grade plant nutrients and additives to ensure your operation achieves consistent, high-quality results. Our concentrated formulas are designed for maximum nutrient uptake, helping you reduce costs while increasing yields.

Why Choose Nutrients & Additives for Your Operation?

Selecting the right nutrients and additives for your operation is essential for achieving robust plant growth, higher yields, and overall superior crop vigor. Nutrients provide the foundational elements plants need to flourish, from core macronutrients like nitrogen, phosphorus, and potassium to essential secondary macronutrients such as calcium, magnesium, and sulfur, which drive critical processes like enzyme production and photosynthesis. By incorporating high-quality additives, you can further enhance nutrient uptake, improve soil structure (or ‘fertility’, or ‘tilth’), and optimize conditions for plant growth. 

Hydrofarm’s wide selection of premium products enables growers to create customized feeding programs tailored to the specific demands of their crops and growing environments. Rely on Hydrofarm to support every stage of growth, from germination to harvest, empowering your operation with trusted, industry-leading solutions.

What Are Essential Plant Nutrients?

Essential plant nutrients are the essential elements required for vigorous plant growth. They are divided into two categories: macronutrients and micronutrients. Macronutrients, like nitrogen, phosphorus, and potassium, are needed in larger quantities. Micronutrients, or trace elements like iron, manganese, and boron, are required in smaller amounts but are just as crucial for processes like photosynthesis and chlorophyll formation.

How Can I Determine If My Plants Have Nutrient Deficiencies?

Nutrient deficiencies often present visible deficiency symptoms. Common signs include yellowing of older leaves (potassium deficiency or iron deficiency), stunted growth of leaves (zinc deficiency), weak plant structure, poor root growth, or a purplish discoloration (phosphate deficiency). For example, a calcium deficiency can lead to weakened cell walls. Regular observation and soil testing can help identify specific issues early.

How Do I Balance Nutrients in My Garden Soil for Optimal Plant Growth?

Balancing plant nutrients requires a strategic approach to nutrient management. Start by conducting a soil testing analysis to understand your current soil pH and nutrient levels. Based on the results, you can select fertilizers with the appropriate NPK ratio and supplement with specific macronutrients or micronutrients as needed to prevent acidic soils, toxicity, or deficiency. Consider factors like your soil type, as sandy soils are more prone to nutrient leaching.

How Do I Choose the Right Fertilizer for My Plants' Nutrient Needs?

Choosing the right fertilizer depends on your crop type, growth stage, and growing medium. For the flowering or fruiting stage, a fertilizer high in phosphorus and potassium is ideal. For vegetative growth, a nitrogen-rich formula supports foliage development. Always consider the guaranteed analysis (NPK) and the nutrient source. For tailored recommendations, our grow consultants can help you create a custom feeding program.

Choose from over 130 trusted brands, many exclusive to Hydrofarm, to support every stage of plant growth. Our products are formulated with the finest macronutrients and chelated micronutrients to promote vigorous development, from strong root growth to impressive fruiting.