How to Change Water in AeroGarden


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An AeroGarden offers you a fantastic tool for indoor plant growth, minus the need for sunlight. However, did you know that changing the water in this system is crucial for optimal plant development?

Today, I’ll guide you through the process of changing the water in your AeroGarden, ensuring a healthier environment for your plants.

This simple step can help accelerate their growth and yield bigger results. Let’s dive in and help your indoor garden thrive!

5 Key Takeaways on How to Change Water in AeroGarden

  1. Change the water in your AeroGarden at regular intervals to keep your plants healthy and thriving.
  2. Regularly replacing the water helps prevent mineral build-up and provides the best-growing conditions for your plants.
  3. Changing the water in an AeroGarden is quick and easy, taking only a few minutes.
  4. Use distilled water to avoid mineral build-up or filtered water to remove impurities like chlorine from tap water.
  5. Rinse and Refill siphons are good alternatives for when you want to keep your water tank fresh with no mess.

How Often Should You Change the Water in Your AeroGarden?

An aerogarden system set up in a sink, featuring several plants with visible roots suspended in water.

I recommend that you change the water in your AeroGarden every 4-6 weeks. I like to change it every 4 weeks to keep it fresh. This is also when I usually need to add more liquid plant food.

Some people also trim the roots of their plants at around the same time. Trimming your plant’s roots removes excess growth that could interfere with the water fill sensor and pump. Intervals between water changes may also vary depending on the kind of plant that is being grown.

It’s good to change the water often if you’re growing herbs. Herbs grow fast and need to stay moist. New water helps them stay healthy, so you can enjoy them fresh every time.

How Do You Change the Water in Your AeroGarden?

Changing the water in your AeroGarden is simple and will only take a couple of minutes. Follow these steps to change the water in an AeroGarden:

  1. Pick up the water reservoir, plants, and grow deck together and bring them to a sink.
  2. Separate the grow deck and plants from the water reservoir.
  3. Empty the old water into the sink.
  4. Rinse the water reservoir with tap water to remove any leftover minerals.
  5. Fill the water reservoir with distilled or filtered water.
  6. Add liquid plant food to the water.
  7. Put the grow deck and plants back on the water reservoir and return everything to the lights.

What Kind of Water Should You Use in Your AeroGarden?

A large blue plastic distilled water jug sits on a wooden kitchen countertop. The background features a white brick wall, a white farmhouse sink, and some kitchen utensils. A black faucet is also visible in the background.

It’s important to use the right type of water to grow a thriving AeroGarden. Here are two types of water that are good for an AeroGarden:

  • Distilled Water – This type of water is purified and has no minerals, so it won’t cause build-up. It’s safe to drink and perfect for all plants.
  • Filtered Water – You can install a filter in your kitchen to remove impurities like chlorine from tap water. This is a good option if you don’t want to use straight tap water.

AeroGarden four-week water change

You can also change the water with the Rinse and Refill Siphon on AeroGarden’s Amazon store (view latest prices here). 

What Type of Water to Use in AeroGarden

Two types of water are good to use in an AeroGarden. The first type is distilled water. Distilled water has been purified, so there is no chance of minerals from the water building up. It is safe to drink and perfect for all plants. 

How Do You Use the Rinse and Refill Siphon?

Plants thrive with occasional changes in nutrient solution in many hydroponic gardens. Rinse and Refill Siphons are handy tools for swapping out the nutrient solution in your AeroGarden. They allow you to change the water without disturbing your plants or spilling.

Follow these steps to use rinse and refill siphon:

  1. Insert Pickup Tube – Put the pickup tube into the liquid.
  2. Close Vent Valve – Turn the white knob on top clockwise to close the vent valve.
  3. Squeeze Bulb – Squeeze the bulb repeatedly until the liquid starts flowing down the accordion tube.
  4. Let Siphon Work – Relax and let the siphon action do its thing.
  5. Open Vent Valve – Before removing the pickup tube from the liquid, turn the vent valve counterclockwise to open it. Wait for all the liquid to drain from the delivery tube.

Learn more about How to Rinse and Refill Aerogarden.

Changing Your AeroGarden Water Final Thoughts

It’s easy yet important to change the water in your AeroGarden to keep your plants healthy. I recommend refreshing the water every 4-6 weeks with distilled or filtered water.

Doing so prevents mineral build-up and gives your plants the best conditions to grow. The time between water changes may also vary depending on the type of plant being grown.

You may also use a rinse and refill siphon to swap out the nutrient solution in your plants without bothering them. 

Whether you’re growing herbs, vegetables, or flowers, clean water and good care will surely make your AeroGarden thrive. Happy gardening!

Changing Your AeroGarden Water FAQs

1. How Do You Flush an AeroGarden?

Start by pouring out the solution and rinsing everything well. Then, fill the container with clear water (without bleach). Let the pump or aerator run for 5 minutes to mix the water.

Empty and rinse once more to make sure no solution is left in the bowl. Finally, put everything back together and start using your indoor hydroponic system. It’s that easy!

2. What Happens if AeroGarden Runs Out of Water?

If the bowl runs out of water, two things will happen: the pump stops working and the LED light switches off. This is a signal that your Sprout needs water.

Not to worry! When the lights are off, the plants’ water intake slows down for a bit, so your plants can go without water for a short time.

You might be interested in these other AeroGarden articles:

Fast Growing Trees and Plants

Photo of author

Written by:

Henry Bravo
Henry Bravo, a University of California, Davis graduate with a BS in Plant Sciences, combines his expertise in horticulture with a passion for smart technology. He specializes in smart gardens, hydroponics, and robotic lawn care, aiming to enhance gardening practices for families. Henry's articles focus on integrating cutting-edge technology to make gardening more efficient and enjoyable, reflecting his commitment to merging natural greenery with innovative solutions.

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