Submersible Heaters and Pond Liners

[Jaxson]

I recently built an indoor plywood pond. I was trying to figure how to use my submersible heaters without burning the pond liner. I have heater covers, but didnt know if that would be enough

 

[kno4te]

Try laying down some tile and place the heaters on it.

 

[fishdance]

I use the slotted black drainage pipes as holders. PVC pipe would work if you don't mind the colour and putting in slots
It depends on how destructive your fish are. For fish with strong teeth, I enclose the power cable in polypipe tube (slit lenthwise) as well.