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The Back to the Roots Water Garden is a small, beginners, aquaponics kit. It’s advertised as three gallons but effectively holds two gallons when set up. There is enough space for one Betta or similar fish. It has a small pump that pushes tank water up to the growing media and recirculates back into the tank. The theory is that the roots will help filter/clean the water, and the fish waste helps fertilize the plants.
The kit comes with two types of seeds and everything else you need, except the fish. It is recommended to add a small heater unless it is a strictly cold-water-loving fish.
My take away from using it is it’s a good learning/teaching system, but not effective on any large scale beyond growing microgreens. And microgreens could be grown with no fertilizer anyway. It’s a fun system though, and I’m still using it.
Here are similar products that I have not tried yet:
AquaSprouts Garden – https://amzn.to/3B3cZb9
ECO-Cycle Aquaponics Garden System – https://amzn.to/2UHlIia
Vivosun Aquaponic fish tank – https://amzn.to/3kaWVhs