General Hydroponics
General Hydroponics® Nutrients Designed for Serious Growers
General Hydroponics is a leader in hydroponic plant nutrition, offering a wide range of research‑driven nutrient formulations and supplements. Known for precision and consistency, General Hydroponics products support strong root development, balanced growth, and dependable results across all stages of cultivation in controlled environments.
Featured products
General Hydroponics® FloraGro® 2-1-6
P_00154
Stimulates structural and vegetative growth. Builds strong roots. Provides nitrogen, phosphorous, potassium and secondary minerals.
General Hydroponics® FloraBloom® 0-5-4
P_00152
Stimulates flower and fruit development. Enhances flavor, aroma, and essential oils. Provides high phosphorous, potassium, magnesium and sulfur.
General Hydroponics® FloraPro™ Bloom 7-12-27
P_00168
- Provides plants with excellent concentrations and ratios of nutrients to help optimize flower development.
- Designed to be used as part of the General Hydroponics® FloraPro™ product system to provide a complete fertilizer program.
- Specifically designed for use in commercial cultivation.
General Hydroponics® FloraPro™ Grow 10-12-22
P_00592
- Provides plants with excellent concentrations and ratios of nutrients to help optimize vegetative growth.
- Designed to be used as part of the General Hydroponics® FloraPro™ product system to provide a complete fertilizer program.
- Specifically designed for use in commercial cultivation.
GH FloraBlend Gallon (4/Cs)
Q113243
FloraBlend® 0.5-1-1 is a blend of plant nutrients designed for hydroponic growing. FloraBlend can be used when growing in coco coir, hydroponics or soil. FloraBlend can be used in addition to your regular fertilizer program from germination through ripening.
GH KoolBloom 2.2 lb (12/Cs)
Q113295
KoolBloom® is a highly concentrated nutrient supplement that promotes abundant flowering and facilitates ripening in annual flowers and herbs. KoolBloom® is rich with phosphorus and potassium and contains precise amounts of ripening elements. KoolBloom® is to be used only at the very end of a plant's life cycle and will help build larger, heavier fruits and flowers.
GH KoolBloom 16 lb
Q113296
KoolBloom® is a highly concentrated nutrient supplement that promotes abundant flowering and facilitates ripening in annual flowers and herbs. KoolBloom® is rich with phosphorus and potassium and contains precise amounts of ripening elements. KoolBloom® is to be used only at the very end of a plant's life cycle and will help build larger, heavier fruits and flowers.
GH Liquid KoolBloom Quart (12/Cs)
Q113297
Liquid KoolBloom® is a bulking agent that goes way beyond other bloom boosters. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid KoolBloom® should be used at the start of the reproductive cycle, initiating larger, heavier fruits and flowers. During the last two weeks, use Dry KoolBloom® for an additional bloom boost and to facilitate ripening.
GH Liquid KoolBloom Gallon (4/Cs)
Q113298
Liquid KoolBloom® is a bulking agent that goes way beyond other bloom boosters. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid KoolBloom® should be used at the start of the reproductive cycle, initiating larger, heavier fruits and flowers. During the last two weeks, use Dry KoolBloom® for an additional bloom boost and to facilitate ripening.
GH Liquid KoolBloom 2.5 Gallon (2/Cs)
Q113299
Liquid KoolBloom® is a bulking agent that goes way beyond other bloom boosters. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid KoolBloom® should be used at the start of the reproductive cycle, initiating larger, heavier fruits and flowers. During the last two weeks, use Dry KoolBloom® for an additional bloom boost and to facilitate ripening.
GH Liquid KoolBloom 6 Gallon
Q113300
Liquid KoolBloom® is a bulking agent that goes way beyond other bloom boosters. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid KoolBloom® should be used at the start of the reproductive cycle, initiating larger, heavier fruits and flowers. During the last two weeks, use Dry KoolBloom® for an additional bloom boost and to facilitate ripening.
GH Liquid KoolBloom 55 Gallon
Q113301
Liquid KoolBloom® is a bulking agent that goes way beyond other bloom boosters. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid KoolBloom® should be used at the start of the reproductive cycle, initiating larger, heavier fruits and flowers. During the last two weeks, use Dry KoolBloom® for an additional bloom boost and to facilitate ripening.
GH Liquid Koolbloom 275 Gallon Tote (1/Plt)
Q113302
Liquid KoolBloom® is a bulking agent that goes way beyond other bloom boosters. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid KoolBloom® should be used at the start of the reproductive cycle, initiating larger, heavier fruits and flowers. During the last two weeks, use Dry KoolBloom® for an additional bloom boost and to facilitate ripening.
GH Armor Si Quart (12/Cs)
Q113308
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si Quart (12/Cs)
Q113309
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si Gallon (4/Cs)
Q113310
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si 2.5 Gallon (2/Cs)
Q113311
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si 6 Gallon
Q113312
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si 2.5 Gallon (2/Cs)
Q113313
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si 55 Gallon
Q113314
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si 6 Gallon
Q113315
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Armor Si Gallon (4/Cs)
Q113316
Armor Si™ is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, coco coir and all types of media. Use as a growth enhancer with irrigation water, or in addition to your regular fertilizers. Armor Si™ improves plant structure and foliar development, increases yield and improves flower and fruit production. In addition, your plants will experience improved heat and cold tolerance, stress resistance and light absorption, which leads to greater plant stature.
GH Flora Kleen Quart (12/Cs)
Q113317
FloraKleen® removes fertilizer residues that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen® monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen® is an excellent final flush and can be used to dissolve mineral and salt buildup.
GH Flora Kleen Gallon (4/Cs)
Q113318
FloraKleen® removes fertilizer residues that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen® monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen® is an excellent final flush and can be used to dissolve mineral and salt buildup.
GH Flora Kleen 2.5 Gallon (2/Cs)
Q113319
FloraKleen® removes fertilizer residues that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen® monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen® is an excellent final flush and can be used to dissolve mineral and salt buildup.
GH Flora Kleen 6 Gallon
Q113320
FloraKleen® removes fertilizer residues that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen® monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen® is an excellent final flush and can be used to dissolve mineral and salt buildup.
GH FloraPro Late Bloom 25 lb (80/plt)
Q113326
"Specifically designed for use in commercial cultivation. FloraPro® Late Bloom 0-24-26 will provide your plants with excellent concentrations and ratios of nutrients to help optimize flower development in late bloom.
FloraPro® Late Bloom fertilizer is designed to be used as part of the FloraPro® product system to provide a complete fertilizer program."
GH CALiMAGic Quart (12/Cs)
Q113328
CALiMAGic™ is a concentrated blend of readily available calcium and magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic™ helps optimize plant nutrition and enhances plant growth and development while preventing blossom end rot and tip burn in many crops, such as tomatoes and lettuce as well as other calcium intensive plants.
GH CALiMAGic Gallon (4/Cs)
Q113329
CALiMAGic™ is a concentrated blend of readily available calcium and magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic™ helps optimize plant nutrition and enhances plant growth and development while preventing blossom end rot and tip burn in many crops, such as tomatoes and lettuce as well as other calcium intensive plants.
GH CALiMAGic 55 Gallon (1/Cs)
Q113330
CALiMAGic™ is a concentrated blend of readily available calcium and magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic™ helps optimize plant nutrition and enhances plant growth and development while preventing blossom end rot and tip burn in many crops, such as tomatoes and lettuce as well as other calcium intensive plants.
GH CALiMAGic 275 Gallon Tote (1/Plt)
Q113331
CALiMAGic™ is a concentrated blend of readily available calcium and magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic™ helps optimize plant nutrition and enhances plant growth and development while preventing blossom end rot and tip burn in many crops, such as tomatoes and lettuce as well as other calcium intensive plants.
GH CALiMAGic 2.5 Gallon (2/Cs)
Q113332
CALiMAGic™ is a concentrated blend of readily available calcium and magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic™ helps optimize plant nutrition and enhances plant growth and development while preventing blossom end rot and tip burn in many crops, such as tomatoes and lettuce as well as other calcium intensive plants.
GH CALiMAGic 6 Gallon
Q113333
CALiMAGic™ is a concentrated blend of readily available calcium and magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic™ helps optimize plant nutrition and enhances plant growth and development while preventing blossom end rot and tip burn in many crops, such as tomatoes and lettuce as well as other calcium intensive plants.
GH Ripen Gallon (4/Cs)
Q113351
Ripen® 0.5-7-6 promotes increased and abundant flowering with greater oil and fragrance production. Ripen® is highly concentrated and provides macronutrients that are primarily responsible for flower and fruit growth. Ripen® is a liquid nutrient that has been specifically engineered and developed to provide these essential macronutrients in your high value crops life. Use Ripen® during the final one-to-two weeks to promote robust flower and fruit production. Think of Ripen® as an investment in your plants.