It is going to happen, no matter where your survival garden is located, it is going to rain one day.
Rain can mess with your pH and increase the water levels. If you are on a flood and drain set up, you should plan for this.
Look what happened after it rained one day.
The water got cloudy. Even though the fish we were using as test subjects were just feeder goldfish, we felt sorry for them and exchanged some of the water. If you do this in an attempt to stabilize the pH without chemical intervention, dont swap out more than 1/3 of the water because you dont want to loose too many of the fish poo nutrients from the water.
The big lesson learned here is to have an overflow mechanism so that if the water level raises too high, it automatically drains out of the system. No matter where your survival garden is located, this is just a good practice.
And speaking of practice, look how well our practice green onions are going. You will notice that we added rosemary to the bed as a test to. See how plants that normally like to be dry will respond to an aquaponics system.
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