Best Home Hydroponic Systems, Compared
Six home hydroponic systems compared from their makers' specs (Click & Grow, Rise Gardens, Gardyn, Lettuce Grow and a DIY Kratky jar), how each kind works, and what university extension services say about light, pH and cleaning.
Home hydroponics runs from a jar on a windowsill to a tower that holds thirty plants. All of them do the same thing - feed roots with water and dissolved fertilizer in place of soil - and they differ in how much they automate and how much they cost. This page describes the four kinds you will meet, what each asks of you, and what university extension services say about running one.
We have not grown crops in these systems side by side, so there are no yield or cost figures of ours here, and no ranking. Product details are the makers’ own and are linked; prices change, so check them where you shop.
Home Hydroponic Systems Compared
| System | Kind | Plants | From the maker | Links |
|---|---|---|---|---|
| Click & Grow Smart Garden 3 | Countertop pod garden | 3 pods | 1.5-litre tank that waters for about three weeks; 8 W LED; pre-seeded pods, or “Grow Anything” pods for your own seeds | See on Amazon · Maker’s page |
| Click & Grow Smart Garden 9 PRO | Countertop pod garden | 9 pods | Automatic watering; lights set by touch or from the app, with a light schedule; 50+ pre-seeded pod varieties or your own seeds | See on Amazon · Maker’s page |
| Rise Gardens Personal | Indoor garden | Up to 12 | Sold with everything needed to start, for herbs, vegetables, fruit and microgreens | See on Amazon · Maker’s page |
| Gardyn Studio and Gardyn Home | Vertical tower | 16 (Studio), 30 (Home) | Cameras, sensors and an app assistant; a paid membership adds features; seedless yCubes for your own seeds | See on Amazon · Maker’s page |
| Lettuce Grow Farmstand | Vertical tower | 18, 24 or 36 | Indoors with lights or outdoors without; Lettuce Grow sells live seedlings for it | See on Amazon · Maker’s page |
| Kratky jar | Do it yourself | 1 per jar | No pump, power or wicks: a plant in a net pot over a container of nutrient solution (see Option 1 below) | See on Amazon |
How we put this together. Five systems from four makers, from a three-pod countertop garden to a 36-plant tower, plus the do-it-yourself jar, compared on what each maker states on its own product page, checked on 26 October 2026 (Gardyn on 10 October). AeroGarden is described below but not in the table, because its pages answered with a bot check this time. As the introduction says, we have not grown crops in them side by side. There are no prices here: the Amazon link searches for the exact system, and we may earn a commission if you buy through it.
What “Hydroponics” Means
The University of New Hampshire’s extension service defines it simply: hydroponics is the production of plants using water instead of soil to deliver the nutrients essential to plant growth.
What you gain and what you pay, in the words of University of Illinois Extension: plants grown this way often mature faster and produce more compared to plants grown in soil, and soil-borne pests and diseases are less of a concern - but hydroponic systems are more expensive to set up than growing in pots or in the ground.
The same source names the crops to begin with: leafy greens such as lettuce, kale and spinach, and herbs. Fruiting crops are harder indoors. New Hampshire’s guide puts tomato, pepper, eggplant and cucumber among the plants with high light requirements that need supplemental lighting.
The Four Kinds at a Glance
| System | Power needed | What you look after | Suits |
|---|---|---|---|
| Kratky jar or tub | None | Mix the solution once per crop | One lettuce or herb per container |
| Deep water culture | An air pump | Top up, check pH, clean between crops | Several leafy plants in one tub |
| Countertop pod garden | Built-in light | Refill the tank, replace the pods | Kitchen herbs with little effort |
| Vertical tower | Pump and lights | Refill, clean, replant | A household’s salad leaves |
Option 1: The Kratky Method
Hydroponics at its simplest: a plant in a net pot hangs over a container of nutrient solution, and nothing moves. The method is named after B. A. Kratky of the University of Hawaii, whose paper on it says that electricity, pumps and wicks are not needed, and all of the nutrient solution is applied before transplanting.
As the plant drinks, the level falls below the pot and leaves what the paper calls an expanding moist air space. The roots in that space take up air; the roots below take up water and nutrients. Two practical points follow from the paper:
- Do not refill to the brim. Raising the level again submerges the air roots, and the paper warns that this will cause the plant to drown. Outdoors, that also means keeping rain out.
- It is for small, quick crops. Kratky describes the method as intended only for crops that need less than 2 gallons of water per plant over the whole growing period - lettuce, and also green onions, kai choy, pak choi and watercress.
Still nutrient solution outdoors can also breed mosquitoes, which the paper calls “both a health menace and a nuisance”; keep containers covered.
What you need: a container that keeps light off the solution, a net pot with a little growing medium, a hydroponic fertilizer mixed as its label directs, and a seedling.
Suits: trying hydroponics with almost no outlay; a head of lettuce or a pot of basil at a time.
Option 2: Deep Water Culture
A larger tub in which the roots stay under water and an air pump keeps the water oxygenated. Oregon State University Extension describes it as a system in which plants grow with their roots submerged in a nutrient-rich water solution, and which requires effective aeration - by air pumps and air stones. In the raft version, the plants sit in net pots in a sheet of foam floating on the solution.
Oregon State lists lettuce, spinach, kale and herbs - basil, cilantro, mint, parsley - as the usual crops, and notes one advantage of the big tub: the volume of water evens out swings in temperature.
What you look after: the same publication stresses regular checks of pH, nutrient concentration and the aeration equipment. If the pump stops, so does the oxygen supply.
Suits: people who eat salad often and do not mind a weekly check and a tub in the corner.
Option 3: Countertop Pod Gardens
Sealed units with a water tank, a light on an arm, and pre-seeded pods. You fill the tank, drop in the pods and plug it in.
- Click & Grow Smart Garden 3. The maker says it holds 3 plant pods, has a 1.5-litre tank that supplies water for about three weeks, and an 8 W LED light. Its pods come pre-seeded; the company also sells “Grow Anything” pods for your own seeds.
- AeroGarden. Now sold through Scotts Miracle-Gro, with gardens, seed kits and a “Grow Anything” seed pod kit for your own seeds.
What to weigh: the convenience is real, and so is the running cost - you keep buying pods or pod kits. Capacity is small: a three-pod garden gives you herbs for the kitchen, not salad for the week.
Suits: herbs within reach of the chopping board, with almost no upkeep.
Option 4: Vertical Towers
Tall units that stack many plants over a reservoir, with a pump that carries the solution to the top.
- Gardyn. The maker lists two models - Gardyn Home, which grows 30 plants, and Gardyn Studio, which grows 16 - with cameras, sensors and an app assistant. A paid membership adds features. You can use your own seeds: Gardyn sells seedless “yCubes” for that.
- Lettuce Grow Farmstand. The maker says the original Farmstand grows up to 36 plants, indoors or outdoors, and sells live seedlings to plant in it; there is a compact indoor model as well.
What to weigh: the floor space and height, the light the unit needs indoors, the sound of the pump, the cost of seedlings, cubes or a membership, and the cleaning. These are the dearest systems here - read the maker’s current prices and terms before you commit.
Suits: a household that eats leafy greens most days and has the room.
Running Any of Them
Light. Illinois Extension says that for growing indoors, supplemental lighting is often necessary. New Hampshire’s guide suggests running lamps for 14-18 hours per day and adjusting as needed. Countertop units have their own light; a jar on a windowsill depends on the window.
pH. Illinois Extension: most plants prefer a pH of 5.5-6.5. New Hampshire: for home hydroponics, a water pH between 5.5 and 7.0 is fine.
Fertilizer. Use one made for hydroponics and mix it as the label directs.
Changing the solution. A Kratky container is filled once per crop by design. For the rest, New Hampshire’s guide says a very small raft system may need a change every couple of months, and a recirculating system once or twice a year.
Keeping it clean. The same guide advises excluding light from the nutrient solution wherever possible, cleaning components between crops, replacing the solution periodically, and washing your hands thoroughly before harvesting. Illinois adds: clean the system before replanting, to prevent algae and salt buildup.
Which One?
- You want to try it and see - a Kratky jar.
- You eat salad constantly and have a spare corner - deep water culture.
- You want kitchen herbs with no fuss - a countertop pod garden.
- You want most of your household’s leafy greens from one unit - a vertical tower, and realistic expectations.
What Hydroponics Won’t Do
It will not grow fruiting crops indoors without a lot of light. It will not look after itself entirely: every system here needs topping up and cleaning. And it is not a way to save money by default - as Illinois Extension notes, set-up costs more than pots or open ground, and pod systems add a running cost. The case for it is freshness, a harvest in every season, and the pleasure of growing.
Frequently Asked Questions
Is home hydroponics cheaper than buying greens at the supermarket?
We have no figures of our own. Extension sources say set-up costs more than growing in pots, and pod systems add the price of pods. A jar-and-fertilizer set-up is the cheapest way to find out whether you enjoy it.
Do I need a grow light for hydroponics?
Indoors, usually yes: Illinois Extension says supplemental lighting is often necessary, and New Hampshire’s guide suggests 14-18 hours of lamp light a day. Countertop gardens have a light built in.
How often do I change the water?
A Kratky container is filled once per crop. New Hampshire’s extension guide says a very small raft system may need a change every couple of months and a recirculating system once or twice a year. Clean the parts between crops.
What grows best hydroponically for beginners?
Leafy greens and herbs, by every extension guide we read. Lettuce and basil are the usual first crops.
Can I grow tomatoes hydroponically indoors?
It can be done, but tomatoes are among the fruiting plants with high light requirements, so they need strong supplemental lighting and more room than a countertop unit gives.
Recommended Gear on Amazon
- Countertop hydroponic garden - browse current options and reviews on Amazon.
- Hydroponic nutrients - browse current options and reviews on Amazon.
- Net pots - browse current options and reviews on Amazon.
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