The funny thing about growing fish in your backyard (Aquaponics) is everyone thinks about the fish and the right water-- temperature, pH, chemical balance, replacement, and so forth-- for the fish. No one thinks about the plants and asks questions, such as:

* What is the right environment for the plant root system?

* What should one do about moving the plant growth medium and pulling up dead plants?

* Should water be added to the plant growth medium or should it be added to the fishtank when water needs to be replaced?

This lesson addresses both how to correctly add water to the system because of evaporative losses, and how to keep the right temperature of the plant growth medium for the plants (not just the for the fish).