Fertilizers

Custom Hydro stocks a full selection of water soluble and organic fertilizers and plant bio-stimulants.

Get the perfect fertilizer solution for your growing needs with Custom Hydro! From cannabis to lettuce to pepper, our wide selection of water soluble and organic fertilizers and plant bio-stimulants will ensure that commercial and hobby growers have just what they need for hydroponics, fertigation and foliar applications.

Cannabis Fertilizers

Featured Products

Peters Professional 5-11-26 Hydroponic Special fertilizer 25 lb.

Peters Professional 5-11-26 Hydroponic Special fertilizer 25 lb.

$66.25

Temporary Back Order

Peters Professional Liquid S.T.E.M. Chelated 2.64 gallons

Peters Professional Liquid S.T.E.M. Chelated 2.64 gallons

$156.81

In Stock.

Super Phos Bat Guano 55 lb

Super Phos Bat Guano 55 lb

$119.99

Out of stock

Nitrogen Bat Guano 44 lb. 9-3-1 fertilizer

Nitrogen Bat Guano 44 lb. 9-3-1 fertilizer

$88.34

In Stock.

Phos Sea Bird Guano Powder 40 lbs

Phos Sea Bird Guano Powder 40 lbs

$53.87

In Stock.

JR Croptech Flower Mix 0-21-26 Water Soluble Fertilizer - 25 Pound

JR Croptech Flower Mix 0-21-26 Water Soluble Fertilizer - 25 Pound

$93.10

In Stock.

JR Croptech Vegetative Mix 9-17-28 Water Soluble Fertilizer - 25 Pound

JR Croptech Vegetative Mix 9-17-28 Water Soluble Fertilizer - 25 Pound

$93.10

In Stock.

Haifastim Kir 10 liter(2.5 gallons)

Haifastim Kir 10 liter(2.5 gallons)

$500.00

In Stock.

SoluPotasse® 55 lb. bag

SoluPotasse® 55 lb. bag

~~$89.75~~ $75.00 Sale

In Stock.

Peters® Professional 0-15-30 Hydroponic Finisher - 25lb

Peters® Professional 0-15-30 Hydroponic Finisher - 25lb

~~$75.00~~ $71.55 Sale

In Stock.

Peters® Professional 14-0-8 Hydroponic Boost - 25lb

Peters® Professional 14-0-8 Hydroponic Boost - 25lb

$50.00

In Stock.

KIR chitosan and silicic acid, 1 liter

KIR chitosan and silicic acid, 1 liter

$82.80

In Stock.

MAGNIFIC 11-0-0 Magnesium Nitrate Fertilizer 55 lb.

MAGNIFIC 11-0-0 Magnesium Nitrate Fertilizer 55 lb.

$47.56

Out of stock

Magriculture Magnesium Sulfate 50 lb.

Magriculture Magnesium Sulfate 50 lb.

$29.98

In Stock.

Soluble Trace Element Mix 1 lb.

Soluble Trace Element Mix 1 lb.

$10.47

In Stock.

Soluble Trace Element Mix 4 lb.

Soluble Trace Element Mix 4 lb.

$20.88

In Stock.

Peters Professional S.T.E.M. 25 lb.

Peters Professional S.T.E.M. 25 lb.

$86.20

In Stock.

Soluble Trace Element Mix 8 oz

Soluble Trace Element Mix 8 oz

$5.70

In Stock.

Potassium Chloride 0-0-62 fertilizer 50 lb.

Potassium Chloride 0-0-62 fertilizer 50 lb.

$43.68

In Stock.

AgSil 16H Potassium Silicate fertilizer 50 lb.

AgSil 16H Potassium Silicate fertilizer 50 lb.

$327.18

In Stock.

Iron Sulfate Hi Yield 4 lb.

Iron Sulfate Hi Yield 4 lb.

$10.30

In Stock.

Iron Sulfate Heptahydrate 1 lb.

Iron Sulfate Heptahydrate 1 lb.

$4.75

In Stock.

Iron Sulfate Heptahydrate powder 50 lb.

Iron Sulfate Heptahydrate powder 50 lb.

$39.05

In Stock.

Iron Sulfate Heptahydrate 4 lb. jar

Iron Sulfate Heptahydrate 4 lb. jar

$7.90

In Stock.

Manganese Sulfate Soluble Fertilizer Powder 55 lb.

Manganese Sulfate Soluble Fertilizer Powder 55 lb.

$111.20

In Stock.

Maximo 360 Soluble Zinc Sulfate fertilizer 50 lb.

Maximo 360 Soluble Zinc Sulfate fertilizer 50 lb.

$84.84

In Stock.

Sil-MATRIX Potassium Silicate 2.5 gallon

Sil-MATRIX Potassium Silicate 2.5 gallon

$92.44

In Stock.

AgSil 16H Potassium Silicate fertilizer - full pallet 40 x 50 lb.

AgSil 16H Potassium Silicate fertilizer - full pallet 40 x 50 lb.

$12,432.80

Special Order Item, contact us for a quote.

Calcium Chloride fertilizer 1 lb.

Calcium Chloride fertilizer 1 lb.

$7.04

In Stock.

Calcium Chloride fertilizer 4 lb.

Calcium Chloride fertilizer 4 lb.

$14.00

In Stock.

Calcium Chloride fertilizer 20 lb.

Calcium Chloride fertilizer 20 lb.

$24.64

In Stock.

Calcium Chloride fertilizer 50 lb.

Calcium Chloride fertilizer 50 lb.

$36.02

In Stock.

Chelated Micronutrient Mix 1 lb.

Chelated Micronutrient Mix 1 lb.

$20.42

In Stock.

Chelated Micronutrient Mix 4.4 lb.

(1)

Chelated Micronutrient Mix 4.4 lb.

$65.62

In Stock.

Chelated Micronutrient Mix 22 lb.

Chelated Micronutrient Mix 22 lb.

$336.21

In Stock.

Sprint 138 6% Iron EDDHA chelated fertilizer 5 lb.

Sprint 138 6% Iron EDDHA chelated fertilizer 5 lb.

$152.29

In Stock.

Vitazyme plant bio-stimulant 1 gallon

Vitazyme plant bio-stimulant 1 gallon

$85.88

In Stock.

Peat-Lite Special 20-10-20 fertilizer 25 lb.

Peat-Lite Special 20-10-20 fertilizer 25 lb.

$42.16

In Stock.

Flowering Crop Special 15-5-25 fertilizer 25 lb.

Flowering Crop Special 15-5-25 fertilizer 25 lb.

$54.60

In Stock.

Biomin Calcium Gallon

Biomin Calcium Gallon

$39.00

In Stock.

Organic SOP 0-0-50 STANDARD FINES 50lb.

Organic SOP 0-0-50 STANDARD FINES 50lb.

$65.60

In Stock.

SoluGreen Ammonium Sulfate 21-0-0 fertilizer 50 lb.

SoluGreen Ammonium Sulfate 21-0-0 fertilizer 50 lb.

$35.75

In Stock.

ICL PeaK MKP 0-52-34 fertilizer 50 lb.

(1)

ICL PeaK MKP 0-52-34 fertilizer 50 lb.

$82.77

In Stock.

Haifa MKP 0-52-34 Fertilizer 55 lb.

Haifa MKP 0-52-34 Fertilizer 55 lb.

$87.12

In Stock.

Fertilome Fish Emulsion Fertilizer 5-1-1 ONE GALLON

Fertilome Fish Emulsion Fertilizer 5-1-1 ONE GALLON

$31.15

In Stock.

Solution Grade GYPSUM 50 lb.

Solution Grade GYPSUM 50 lb.

$14.56

In Stock.

Soluble Fulvic Acid 1 lb.

Soluble Fulvic Acid 1 lb.

$13.40

In Stock.

Soluble Fulvic Acid 4 lb.

Soluble Fulvic Acid 4 lb.

$31.15

In Stock.

Soluble Fulvic Acid 15 lb.

Soluble Fulvic Acid 15 lb.

$120.00

In Stock.

Ferti-Organic Soluble Fulvic Acid 50 lb.

Ferti-Organic Soluble Fulvic Acid 50 lb.

$204.50

In Stock.

Soluble Seaweed 0-0-14 fertilizer 50 lb.

(1)

Soluble Seaweed 0-0-14 fertilizer 50 lb.

$272.80

In Stock.

Algamin Kelp Meal Maxicrop 5 lb.

Algamin Kelp Meal Maxicrop 5 lb.

$16.51

In Stock.

Haifa Multi-K Reci potassium nitrate 55 lb.

Haifa Multi-K Reci potassium nitrate 55 lb.

$82.76

In Stock.

Azomite 44 lb. bag

Azomite 44 lb. bag

$39.75

In Stock.

Azomite 1 lb.

$5.25

In Stock.

Azomite 4 lb.

Azomite 4 lb.

$8.10

In Stock.

Azomite 20 lb.

$26.40

In Stock.

Foliar Pack OG BIOWAR

Foliar Pack OG BIOWAR

In Stock.

Metalosate MultiMineral Organic 5 lb.

Metalosate MultiMineral Organic 5 lb.

$100.70

In Stock.

Metalosate Copper Organic 5 lb.

Metalosate Copper Organic 5 lb.

$96.91

In Stock.

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