Best General Hydroponics Hydroponic Nutrients Additives in 2026
Daisy
Last Updated: Jul 18, 2026
Daisy
Last Updated: Jul 18, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Liquids to stabilize nutrient pH in hydroponics
Includes pH Up and pH Down 1 qt. bottles
pH Up: base solution formulated with potassium carbonate
pH Down: acid formulation that uses phosphoric acid
pH is important because it affects availability and absorption of several of the 16 atomic elements needed for plant growth
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
General Hydroponics Diamond Nectar 0-1-1 is a high-quality nutrient additive
Apply to all crops, including vegetable crops, row crops, field crops, trees, vines, ornamentals, gardens, and landscaping
Add to fertilizer mix for plants growing in soil, potting mixes, soilless rooting media, and hydroponics
This nutrient additive can also be used as a foliar spray
General Hydroponics makes a multitude of products that will provide anything your plants crave
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
The Flora Series is a hydroponic-based nutrient system that helps fulfill your plants’ nutrient needs at every stage of growth
Nutrients included in the Series are FloraMicro, FloraBloom, and FloraGro
FloraMicro: contains nitrogen and calcium, as well as trace minerals, which are essential for a comprehensive hydroponic plant diet
FloraBloom: adds phosphorus, potassium, magnesium, and sulfur to provide nutrients for flower and fruit development
FloraGro: provides additional nitrogen and potassium for structural and foliar growth
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Dissolves accumulated fertilizer salts
Reduces excess & imbalanced nutrients
Releases nutrients bonded to plants & systems
Use Flora Kleen as a final flush for one week before harvest
Safe for all hydroponic systems & media while plants are growing
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| GROWDOTS | 9.56 | ✅ | ✅ | ✅ |
General Hydroponics FloraNova Bloom 4-8-7 contains the robust strength of dry fertilizer in the rapid application of a liquid
FloraNova Bloom promotes explosive flowering and fruiting while adding aroma, taste and color
Optimum nutrient absorption is aided by natural humic extracts for increased quality and superb yields
Use with hydroponics, soilless mixtures, containers, or garden grown plants in continuous liquid feed programs
Contains an NPK of 4-8-7
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
The Flora Series is a hydroponic-based nutrient system that helps fulfill your plants’ nutrient needs at every stage of growth
Nutrients included in the Flora Series are FloraMicro, FloraBloom, and FloraGro
FloraMicro is rich in nitrogen, calcium, and chelated micronutrients to help support fast-growing crops during all growth stages
FloraGro is blended with nitrogen phosphorus, potassium, and magnesium for support of structural and foliar growth
FloraBloom is packed with phosphorus, potassium, magnesium, and sulfur to help boost results during flowering and fruiting
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
General Hydroponics Diamond Nectar 0-1-1 is a high-quality nutrient additive
Apply to all crops, including vegetable crops, row crops, field crops, trees, vines, ornamentals, gardens, and landscaping
Add to fertilizer mix for plants growing in soil, potting mixes, soilless rooting media, and hydroponics
This nutrient additive can also be used as a foliar spray
General Hydroponics makes a multitude of products that will provide anything your plants crave
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
MaxiGro and MaxiBloom are stand-alone, water-soluble, dry concentrated nutrients
MaxiGro and MaxiBloom will provide superior results when used with a wide variety of crops in all hydroponic, soil or soil-based growing environments
Use to encourage growth of seedlings and cuttings and to stimulate rapid growth through the vegetative growth stage
Use in the reproductive stage in fast-growing annuals
Use 1-2 teaspoons per gallon of water
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
General Hydroponics Liquid KoolBloom 0-10-10 is a concentrated nutrient additive that promotes flowering and helps facilitate bulking and ripening in annual plants
Small amount of Liquid KoolBloom provides a significant amount of phosphorus and potassium
Enhances the production of essential oils and fragrance in many flowers, culinary, and medicinal herbs
Use throughout the entire flowering and ripening stage of plant life
General Hydroponics Liquid KoolBloom is for both hydroponic and soil applications
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| General Hydroponics | 9 |
We've carried out a comprehensive analysis of 30,559 reviews on hydroponic nutrients additives, using our selection criteria to identify the best options in the gardening & lawn care. Our findings reveal that most customers typically select hydroponic nutrients additives priced around $42.77, with top brands including bioag, element nutrients, purpinator, general hydroponics, terpinator, humboldts secret, nessagro, american hydroponics and cutting edge and canna
Our team of expert editors reviewed these high-quality items and handpicked the top 9 hydroponic nutrients additives for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the gardening & lawn care category. These include usahydrogardening, growdots, element nutrients, 5280 garden supply, amazon.com, green supplies, td supply corp, arcadia intl and grow green mi and thshydro .
We are dedicated to assisting our users in finding the right fertilizers Products based on their needs, saving them considerable time when choosing which hydroponic nutrients additives to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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