DIY SUBSTRATE HEATING NOT USING CABLE
I am converting a 4' x 18" x 20"marine tank to a planted tank and was reading the AquaGreen article about using pipes to conduct warm water throught the substate and my aquarium uses a sump where the water is pumped back into the tank trough a hole in the base of the tank. I had an idea about using irrigation poly pipe to divert the water from the sump trougn a 12mm manifold on both sides of the tank and 6mm connection pipes to heat the substrate and returning the water to the tank by a spray bar. The back siphoning to the sump is stopped by a irrigation non return valve (with the spring removed) on the return pipe from the aquarium. I have using the non return valve for about a year on the marine tank and it works well. Has any one tried this before? Any comments or suggestions would be appreciated before I try it. Thanks in advance.