The best hydroponic nutrient for most home growers is FoxFarm Grow Big Hydro if you want one bottle for leafy growth, the General Hydroponics Flora Series if you want to change the mix as plants move from leaves to fruit, and AeroGarden Liquid Plant Food if you own an AeroGarden. We compared 10 products sold in the US for growing vegetables, herbs and houseplants in water. Every analysis below is quoted from the maker’s own label, product page, feed chart or catalog, or from the product’s Amazon listing where we say so; the price bands and comparisons are ours. We do not use or test the products we cover.
Hydroponic nutrients matter because the plant draws its minerals from the nutrient solution. Our explainer on how hydroponics works covers what a nutrient solution is. This guide is about which bottle or bag to buy.
At a Glance: Best Hydroponic Nutrients 2026
| # | Product | Award | Format and analysis (per the maker) | Band |
|---|---|---|---|---|
| 1 | FoxFarm Grow Big Hydro | Best One-Bottle Liquid for Leafy Growth | 1-part liquid, 3-2-6 | $25–75 (1 qt) |
| 2 | General Hydroponics Flora Series | Best for Stage-by-Stage Control | 3-part liquid: 5-0-1, 2-1-6, 0-5-4 | $25–75 (three 32 oz bottles) |
| 3 | AeroGarden Liquid Plant Food | Best for AeroGarden Owners | 1-part liquid, 4-3-6, pH-buffered | under $25 (3 fl oz) |
| 4 | General Hydroponics FloraNova Grow & Bloom | Best Concentrated One-Bottle-per-Stage | 1-part liquid per stage; Grow 7-4-10 | $25–75 (1 pint each) |
| 5 | General Hydroponics MaxiGro | Best Low-Cost Powder | 1-part powder, 10-5-14 | under $25 (2.2 lb) |
| 6 | Dyna-Gro Foliage-Pro 9-3-6 | Best for Herbs and Foliage Houseplants | 1-part liquid, 9-3-6 | $25–75 (1 qt) |
| 7 | Botanicare Pure Blend Pro Grow | Best One-Part Liquid with Feed Charts | 1-part liquid, 3-2-4 | $25–75 (1 qt) |
| 8 | Masterblend 4-18-38 Complete Combo Kit | Best Value for Tomatoes and Big Reservoirs | 3-part powder kit (per the Amazon listing) | under $25 (2.5 lb kit) |
| 9 | Lettuce Grow Farmstand Nutrients | Best for Lettuce Grow Farmstand Owners | 2-part (A and B) | $25–75 (A and B kit) |
| 10 | General Hydroponics pH Control Kit | Best Companion: pH Testing and Adjustment | pH Up, pH Down and test indicator (per the Amazon listing) | under $25 (kit) |
Bands reflect observed selling prices at our last review. Offers change; check the listing.
How We Chose These Hydroponic Nutrients
We started from a broad list of nutrients sold in the US for home hydroponics: countertop gardens, lettuce and herb jars, deep-water buckets and vertical towers. We kept nutrients whose maker publishes a guaranteed analysis or a clear product description, and whose exact size we could find for sale; the pH kit is described from its Amazon listing. For each one we recorded the format (one part or several, liquid or powder) and the analysis.
Two rules shaped the list. First, we left out nutrient lines whose makers market them mainly for cannabis growing; this guide is for food, herbs and houseplants. Second, we do not quote mixing rates: each pick refers you to the maker’s label, and we never suggest a stronger or weaker mix than the label. Botanicare CNS17 Grow did not make the list because our October 2026 Amazon search turned up its Bloom and Ripe partners but not the Grow bottle itself.
Our October 2026 search of the US CPSC recall database found no recall for any nutrient or pH product recommended above. We do not use or test the products we cover. Author: Michael Probert.
Our 10 Picks: 9 Hydroponic Nutrients and a pH Kit
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FoxFarm Grow Big Hydro — Best One-Bottle Liquid for Leafy Growth
One-part liquid · 3-2-6 (per the Amazon listing) · Mixing rate on FoxFarm’s product page · Price band: $25–75 (1 qt)
Grow Big Hydro is FoxFarm’s hydroponic liquid for the leafy, vegetative stage. FoxFarm’s product page gives general and heavy-feeding rates, names pH 5.8 to 6.3 as its target range, and recommends a conductivity or ppm meter to watch strength. For amounts and timing, follow the product’s label. It is one measurement per reservoir, which suits lettuce, herbs and leafy houseplants in a bucket or jar.
Pros: One bottle; pH range stated by the maker. Cons: Made for the growth stage, so fruiting plants need a separate bloom product; the quart is in a higher band than the powders below.
General Hydroponics Flora Series — Best for Stage-by-Stage Control
Three-part liquid: FloraMicro 5-0-1, FloraGro 2-1-6, FloraBloom 0-5-4 (per General Hydroponics) · Rates on General Hydroponics’ feed charts · Price band: $25–75 (three 32 oz bottles)
The Flora Series splits nutrition into three bottles. General Hydroponics describes FloraMicro as the base that supplies nitrogen, calcium and chelated micronutrients through the whole cycle, FloraGro as the vegetative part, and FloraBloom as the flowering and fruiting part. General Hydroponics sets the balance between the three bottles for each growth stage, and the order to add them, on its feed chart; we have not reproduced the chart here. For amounts and timing, follow the product’s label.
Pros: General Hydroponics says the three parts let you tailor the mix by growth stage; the maker publishes feed charts by stage. Cons: Three measurements per reservoir; the mixing order matters; more to learn than a one-bottle product.
AeroGarden Liquid Plant Food — Best for AeroGarden Owners
One-part liquid, 4-3-6 with calcium (1.0%) and magnesium (0.5%), pH-buffered (per the maker) · Amount set by garden size (per the maker) · Price band: under $25 (3 fl oz)
AeroGarden’s own plant food is the simplest choice for its countertop gardens. The maker sets the amount by garden size. For amounts and timing, follow the product’s label. The maker says other brands of plant food may clog the pump or lack the right nutrients for its gardens, and its product page says to keep the bottle out of reach of children and pets and not to overfeed.
Pros: Dosing matched to each AeroGarden size; pH-buffered; calcium and magnesium included. Cons: Small bottles; made for AeroGarden gardens.
General Hydroponics FloraNova Grow & Bloom — Best Concentrated One-Bottle-per-Stage
One-part liquid per stage; FloraNova Grow 7-4-10 (per General Hydroponics) · Rate set by plant size (per General Hydroponics) · Price band: $25–75 (1 pint each)
FloraNova uses one bottle for the growth stage and one for flowering, so you measure one product at a time. General Hydroponics calls FloraNova Grow super-concentrated and sets its rate by plant size and by its light, medium or aggressive program. For amounts and timing, follow the product’s label. General Hydroponics’ system tips for FloraNova Grow also say to keep pH between 5.5 and 6.5 and to change the solution every 7 to 10 days.
Pros: Small doses from a concentrated bottle; simpler than a three-part system; Grow and Bloom sold together. Cons: Two bottles to buy; less fine control than the Flora Series.
General Hydroponics MaxiGro — Best Low-Cost Powder
One-part water-soluble powder, 10-5-14 with 6% calcium, 2% magnesium and 3% sulfur (per General Hydroponics) · Mix at the label rate · Price band: under $25 (2.2 lb)
MaxiGro is a stand-alone dry nutrient for vegetative growth. General Hydroponics lists its guaranteed analysis as 10% total nitrogen, 5% available phosphate and 14% soluble potash, plus calcium, magnesium, sulfur, chelated iron and manganese. The maker says it works in both hydroponic and soil-based setups and that it should be dissolved completely in fresh water. Follow the rate printed on the bag.
Pros: One of the lowest bands in this guide; calcium and magnesium in one product; General Hydroponics says its dry form is portable and easy to store. Cons: A powder has to be weighed or measured and dissolved; it is a growth formula, so fruiting plants need a bloom product later.
Dyna-Gro Foliage-Pro 9-3-6 — Best for Herbs and Foliage Houseplants
One-part liquid, 9-3-6 · Maker says it contains all 6 macronutrients and all 10 micronutrients plants need · Mix at the label rate · Price band: $25–75 (1 qt)
Foliage-Pro is now sold under the SUPERthrive name, and the Amazon listing we link still carries the Dyna-Gro brand. The maker’s catalog describes it as a complete, urea-free formula with a 3-1-2 nitrogen-phosphorus-potassium ratio, for growth in any medium. In our view, that nitrogen-forward balance suits leafy herbs and foliage houseplants. The catalog also tells you never to mix concentrates and to dilute one product before adding another. Use the rate on the bottle.
Pros: One bottle with the full set of micronutrients; the maker says it suits any growing medium. Cons: Sellers list it under both the SUPERthrive and Dyna-Gro names.
Botanicare Pure Blend Pro Grow — Best One-Part Liquid with Feed Charts
One-part liquid, 3-2-4 with 1% calcium and 0.5% magnesium (per Botanicare) · Rates on the label and Botanicare’s recipes · Price band: $25–75 (1 qt)
Botanicare describes Pure Blend Pro Grow as a one-part plant food for soil, coco and soilless hydroponic growing, for use during the vegetative stage. It points you to the product label, its pre-built recipes and its online nutrient calculator for rates. Botanicare’s page also covers rate changes for nutrient-fortified potting soil, supplements, reverse osmosis water and coco coir. For amounts and timing, follow the product’s label.
Pros: One bottle for the growth stage; calcium and magnesium in the analysis; the maker publishes recipes. Cons: Botanicare sells a separate Pure Blend Pro Bloom for the flowering stage; check the rate on the label, since Botanicare does not list it on the product page itself.
Masterblend 4-18-38 Complete Combo Kit — Best Value for Tomatoes and Big Reservoirs
Three-part powder kit: 4-18-38 base, calcium nitrate, Epsom salt (magnesium sulfate), per the Amazon listing · Mixed by weight from Masterblend’s chart · Price band: under $25 (2.5 lb kit)
Masterblend says its 4-18-38 Tomato Formula is suited to both soil and hydroponic growing and to tomatoes, peppers and leafy greens. Masterblend publishes a mixing chart that sets the weight of each part, the order to add them and lower rates for seedlings. The kit’s Amazon listing describes a different packing ratio, so check the instructions that come with your kit against Masterblend’s own chart. For amounts and timing, follow the product’s label.
Pros: A low band for a three-part kit; Masterblend publishes a full guaranteed analysis; named by the maker for tomatoes and peppers. Cons: Three powders and a gram scale; the mixing order matters.
Lettuce Grow Farmstand Nutrients — Best for Lettuce Grow Farmstand Owners
Two-part nutrient (A and B) with calcium and nitrogen (per Lettuce Grow) · Doses come from Lettuce Grow’s own guidance · Price band: $25–75 (A and B kit) · Sold direct; not listed on Amazon in our October 2026 search
Lettuce Grow sells its own two-part nutrient for the Farmstand tower, as a kit or as separate A and B components. The maker describes it as a blend of raw earth minerals that includes calcium and nitrogen. It notes that the kit does not include a scoop and that Part B can absorb moisture and clump or liquefy, which it says does not affect how well it works. Lettuce Grow’s recommended scoops refer to this product.
Pros: Made for the Farmstand; Lettuce Grow’s scoop guidance refers to it; sold as a kit or by part. Cons: The product description we read does not include a full guaranteed analysis.
General Hydroponics pH Control Kit — Best Companion: pH Testing and Adjustment
8 oz pH Up, 8 oz pH Down, 1 oz test indicator, test tube, eyedropper and color chart (per the Amazon listing) · Price band: under $25 (kit)
Several of the makers above give a pH range for the solution, so a way to test and adjust it is a useful companion for any reservoir. This kit tests pH with drops of indicator in a small sample tube, read against a color chart, and raises or lowers it with the Up and Down bottles. The listing gives pH 5.5 to 6.5 as the recommended range for most plants. For amounts and timing, follow the product’s label.
Pros: Testing and both adjusters in one box. Cons: In our view, the indicator and adjusters are consumables you will need to replace.
How to Choose a Hydroponic Nutrient
Match the nutrient to your system
If you own a branded system, start with its own nutrient. AeroGarden and Lettuce Grow both write their dosing for their own products, and AeroGarden says other brands may clog its pump. For a jar, bucket or homemade system, choose a nutrient whose maker describes it for hydroponic use, and follow its label.
One part or several
One-part liquids (FoxFarm Grow Big Hydro, Foliage-Pro, Pure Blend Pro Grow, AeroGarden) mean one measurement per reservoir, which suits small systems and leafy crops. A multi-part system such as the Flora Series lets you change the balance as plants start to flower and fruit. Multi-part products can also have a mixing order; follow the maker’s directions. SUPERthrive’s catalog says never to mix concentrates and to dilute one product before adding the next.
Liquid or powder
Liquids need no dissolving. Powders (MaxiGro, Masterblend) need to be measured carefully and dissolved fully. In our view, a liquid is simpler for a countertop garden, and a powder makes more sense for a large bucket or tower.
Leafy crops or fruiting crops
For lettuce, herbs and foliage houseplants, we would start with a growth-stage or nitrogen-forward formula such as Grow Big Hydro, MaxiGro or Foliage-Pro. For tomatoes and peppers, the Flora Series and FloraNova Grow and Bloom offer stage-by-stage programs, and Masterblend names its 4-18-38 for tomatoes and peppers.
Frequently Asked Questions
Can I use regular plant fertilizer in a hydroponic system?
Use a product the maker says is for hydroponics. In a hydroponic system the plant draws its minerals from the nutrient solution, so the nutrient needs to be complete and fully water-soluble. AeroGarden specifically warns that other plant foods may clog its pump.
How much hydroponic nutrient should I add?
Follow the label of the product you buy. Rates vary widely between products and by plant stage, so we do not quote them here, and we do not recommend going above or below the label.
What pH should a hydroponic nutrient solution be?
The makers above give similar ranges: General Hydroponics says pH 5.5 to 6.5 for FloraNova in hydroponics, and FoxFarm says 5.8 to 6.3 for Grow Big Hydro. Test after mixing. For amounts and timing, follow the product’s label.
Are there organic hydroponic nutrients?
This guide covers mineral nutrients. Botanicare, for example, describes Pure Blend Pro as a blend of natural minerals and organic extracts, which is not the same as a certified organic product.
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This guide was researched and written by Michael Probert. Analyses come from each maker’s own label, product page, feed chart or catalog, or from the product’s Amazon listing where stated.