I am thinking of building a HOB filter that is essentially a giant U shape. The input side of the U will have mechanical and biological filtration media and the output side I want to have my heater. Can I just drop my heater in the vertical piece of PVC? It's a 200w aqueon proheater submersible. I worry about potentially melting the PVC but I am also struggling to figure out how I could mount the heater without it touching any sides.
Thanks everyone!
Thanks everyone!