Step 5: Introducing the Elements
To control how much water goes into the beds - a timer can be used for the pump. A simple timer that plugs into the wall outlet can be used. How often you want the pump on depends of which plants you are planting and how much water they need.
Be sure to use fish that can eat what you provide. Obviously you cannot use carnivorous fish like trout. We have Rock Bass in our system.
Enjoy your fish and vegetables!
A simple filter can be constructed between to lower bed and the fish tank to take out soil and other solids that have made their way into the system.