I have a 40g High, Im trying to make this tank a reef tank and i have an Under gravel filterWith power head on top for flow. Will this be ok with my reef tank? I really dont want to take it out b/c i have a lot of live rock and will shock my fish... What can i do and is this ok? I get so many answer I hope this is the right one! Thanks
P.S I have a Protean Skimmer,Wet/Dry Filter,heater,Right lights but they move my temp around and that's it!