How to Clean an AeroGarden Between Grows
A step-by-step guide to cleaning any countertop hydroponic garden between grows, from unplugging and scrubbing to rinsing and preventing algae.
Cleaning your countertop hydroponic garden between grows is simpler than it looks: unplug it, empty the bowl, scrub away roots and algae, rinse everything thoroughly, and let it dry before you start new plants. The exact steps depend on your model, so keep your manual nearby. The advice below applies to any countertop hydroponic garden, including an AeroGarden.
Why cleaning between grows matters
Old roots, spent leaves, and a film of algae give the next crop a poor start. Leftover plant matter breaks down in the water and can clog the pump. Algae grows wherever light reaches water and nutrients, so the deck, the grow basket openings, and the bowl all become green over time. A clean garden means fresh water stays fresh longer, and your new seedlings get an even start.
Unplug and take it apart
Unplug the garden from the wall before you touch the water. Lift the light hood off its post if your model allows it, and set it aside where it will not get wet. Remove the grow deck, the seed baskets, and any spacers or labels. Take out the pump if it lifts out easily. Never immerse the light, the cord, the plug, or the control panel in water. Wipe those parts with a damp cloth only.
Empty and scrub the bowl
Pour the old water down the sink. If the bowl is heavy, use a cup to bail most of it out first. Add warm water and a mild dish soap, then scrub the inside with a soft sponge or bottle brush. Pay attention to the water line, where mineral film collects. For stubborn spots, let warm soapy water sit in the bowl for a few minutes before scrubbing again. Do not use abrasive pads that scratch the plastic; scratches give algae a place to grip.
Clear roots and algae from the deck and pump area
The grow deck and the pump area are where roots tangle and algae hides. Pull out any root pieces caught in the basket holes or around the pump intake. A soft brush or an old toothbrush works well in the corners. If your pump has a removable filter or impeller cover, open it and rinse away debris. Check the pump tubing for blockages. Algae grows where light reaches the water, so the deck openings and the edges of the bowl are the first places to turn green. Cleaning them now saves you a bigger job later.
Rinse thoroughly
After scrubbing, rinse every part that touched soap with clean water. Soap residue can harm new seedlings, so rinse until the water runs clear and no suds remain. Fill the bowl with plain water, swish it around, and dump it out. Repeat if you still smell soap. Rinse the grow deck, baskets, and pump the same way. If you use a vinegar solution instead of soap, rinse just as carefully; vinegar left behind can affect the nutrient balance.
Check the manual before using a dishwasher
Many people ask if an AeroGarden is dishwasher safe. The answer depends on the model and the part. Some bowls and decks can go on the top rack, but the pump, the light, and anything electrical should never go in. Heat can warp plastic and damage seals. Before you put any part in a dishwasher, read your garden's manual. If the manual does not say a part is dishwasher safe, wash it by hand. That is the safe choice for any countertop hydroponic garden.
Let everything dry
Set the clean parts on a towel to air dry. Drying in a well-ventilated spot helps kill off any remaining algae spores. Once everything is dry, you can reassemble the garden. If you are not starting new plants right away, leave the bowl empty and the deck off so air can circulate.
Common problems and what causes them
| Problem | Likely cause | Fix |
|---|---|---|
| Green film on the deck or bowl | Algae growing where light reaches water and nutrients | Scrub with warm soapy water, rinse well, and cover empty basket holes so light cannot reach the water |
| Slimy roots or a sour smell | Old plant matter breaking down in the water | Empty and scrub the bowl, clear roots from the pump area, and start with fresh water |
| Pump making noise or not running | Roots or debris caught in the impeller | Unplug the garden, open the pump cover, remove debris, and rinse the impeller |
| White crusty spots | Mineral buildup from hard water | Soak the part in warm water with a little vinegar, then scrub and rinse thoroughly |
| Soap taste or poor growth after cleaning | Soap or cleaner left behind | Rinse all parts again until no suds or smell remain |
Preventing algae between cleanings
Algae needs light to grow, so block light from reaching the water. Keep the grow deck full of baskets or spacers, and cover any empty holes. If your garden has a water level window, keep it shaded or clean it often. Change the water on the schedule in your manual, and do not let old nutrient solution sit for weeks. A simple rinse of the deck and bowl between full cleanings keeps algae from taking over.
When to replace parts
Some parts wear out. Seed baskets can crack, and pump impellers can become noisy even after cleaning. If a part no longer fits snugly or the pump will not run quietly after a thorough cleaning, replace it. When you start your next round, fresh baskets and clean water give your seedlings the best chance. If you plan to start seeds outside the garden first, look at seed starting supplies for trays and domes that pair well with a countertop setup.
Reusing and storing seed pods
If you use seed pods, clean them between grows too. Remove old roots and rinse the baskets. Some pods can be reused with new seeds; others are designed for one planting. For a full walkthrough of planting, storing, and reusing them, see our guide to AeroGarden seed pods. If you prefer to make your own, our guide to DIY seed pods shows how to use common materials and keep them clean between crops.
A simple cleaning routine
Make cleaning a habit at the end of every grow. Unplug the garden, take it apart, and scrub the bowl, deck, and pump area. Rinse everything until no soap remains. Check the manual before using a dishwasher, and never immerse electrical parts. Let it all dry, then reassemble or store it. A clean garden is the quiet secret to a good next crop.
Common questions
- How often should I clean my AeroGarden?
- Clean it between every grow, and rinse the bowl and deck whenever you change the water. If you see algae or notice a smell, clean sooner. A full scrub at the end of each crop keeps the pump and baskets clear for the next round.
- Is an AeroGarden dishwasher safe?
- It depends on the model and the part. Some bowls and decks can go on the top rack, but the pump, light, and any electrical parts should never go in a dishwasher. Check your garden's manual first, and if it does not say a part is dishwasher safe, wash it by hand.
- How do I get rid of algae in my AeroGarden?
- Scrub the affected parts with warm soapy water, rinse well, and block light from reaching the water. Algae grows where light hits water and nutrients, so cover empty basket holes and keep the water level window clean. Regular water changes also help.
- Can I use bleach or vinegar to clean my AeroGarden?
- Vinegar is useful for mineral spots, but rinse it away completely. Bleach can leave residue that harms plants, so avoid it unless your manual specifically allows it. Mild dish soap and warm water are safest for most parts.
- What should I do if my AeroGarden pump is noisy after cleaning?
- Unplug the garden and open the pump cover. Remove any roots or debris caught in the impeller, then rinse it. If the noise continues after a thorough cleaning, the pump may need replacing.
AeroGarden is a trademark of its owner. My Garden and Lawn is not affiliated with it and does not sell AeroGarden units; the advice here applies to any countertop hydroponic garden.
