Kratky Kit vs AeroGarden: Passive vs Powered Countertop Growing

AeroGarden is a well-known brand of powered countertop garden. A Kratky kit is a passive hydroponic setup with no pump or electricity. Both grow herbs and greens indoors in water, but they work in different ways and suit different people.

The short answer

Choose a Kratky kit if you want the simplest, cheapest way to grow greens and herbs, are happy to use a window or a separate light, and like the idea of nothing that can break. Choose a powered countertop garden such as AeroGarden if you want an all-in-one appliance with a built-in light and reminders, and do not mind it needing power and some ongoing supplies.

How each one works

A Kratky kit holds a plant in a net pot above a container of nutrient solution. The roots reach down into the solution. As the plant drinks, the level falls and leaves an air gap where the upper roots get oxygen. There is no pump, timer or power, and the solution is usually not refilled to the top. See the Kratky method guide.

A powered countertop garden like AeroGarden has a water bowl, a small pump that moves and aerates the water, and an LED light on an adjustable arm, controlled by the unit. Plants usually grow from pre-seeded pods, and the unit reminds you to add water and nutrient. Because a pump supplies oxygen, the water is kept topped up.

Side-by-side comparison

Kratky kit vs powered countertop garden

	Kratky kit	Powered countertop garden (e.g. AeroGarden)
Power	None (unless you add a light)	Needs an outlet for the pump and light
Oxygen to roots	Air gap as the level falls	Pump circulates and aerates the water
Water level	Allowed to fall; not refilled to the top	Kept topped up
Light	Window or a separate grow light	Built in
Seeds	Any seed in rockwool or plugs	Usually pre-seeded pods; some models accept your own seeds
Upfront cost	Low, especially DIY	Higher; it is an appliance
Ongoing cost	Nutrient, media, seeds	Pods or seeds, nutrient, electricity
Size	Any container you choose	Fixed by the model
Noise	Silent	Quiet pump hum
What can fail	Very little	Pump, light or electronics

When a Kratky kit is the better choice

• You want the lowest cost, or want to try hydroponics before spending much.
• You want to grow in several containers, or in a size that suits a particular plant.
• You want to start your own seeds of any variety.
• You have a bright window, or already own a grow light.
• You want something with no moving parts for a classroom, office or holiday home.

When a powered countertop garden makes more sense

• You have no bright window and want light included and set up for you.
• You like reminders and an appliance that manages the schedule.
• You want a tidy, single unit that looks like a kitchen gadget.
• You want to keep the water topped up for long-lived plants rather than plan around a falling level.

Using AeroGarden parts the Kratky way

Some people with an unused countertop garden use its bowl as a Kratky reservoir without running the pump. That can work for short crops, but the Kratky rules then apply: fill so the roots just reach the solution, let the level fall, block light from the water and do not top it back up to full. The bowl may hold less solution than a crop needs, so a larger container is often a better Kratky reservoir. The Kratky containers guide covers sizing.

Growing the same crops either way

Both suit lettuce, basil, parsley, mint and other leafy greens and herbs. Larger fruiting crops such as tomatoes and peppers are possible in both only with more room, more light and more solution. The guide to the best plants for Kratky kits lists easy choices.

Bottom line

A powered countertop garden is an appliance that does more of the work for you. A Kratky kit is a method that does the work with no power at all. If you are choosing between them, the guide on how to choose a Kratky kit walks through what to look for.

Frequently asked questions