best overflow

[matt b]

im looking for a good overflow for my 55 and it needs to be 800gph or more and i dont want to do the diy 1s and what do u think about the CPR overflows

 

[peckhead]

i like the u tube over flows better. i have one on a smaller tank and it has never failed.

 

[earlybird]

CPR style overflow requires an air pump to lift the water and I've read about people having start up problems with them after a power outage. Not good. You'll probably need a dual pipe/drain overflow. Go with a U-tube style, if kept clean they should never fail.