Personally I think Lights and heaters should be on GFI, power heads/submersible pumps ... no need..
Pumps that are meant to run dry, ... GFI

silly me, today moving stuff from one tank to another I dripped some water on a power bar... I saw smoke so I reached down to see what was going on... wowsa.. my shoulder is still sore, and the breaker didn't trip...

This coming weekend I have some plans, clean up all wiring, all Power bars will be away from water, and well above the floor, and GFIs will be installed for my lights and heaters.... damn shoulder hurts...

if any one in the lower mainland wants help seting up or installing a gfi system fell free to ask . id gladly help some one who wants to be safe .

Hey Golden thats mighty generous of you.