I have a 54 gal Corner tank and running two Koralia 425 nano power heads. They are placed in the front side corners facing the center front of the glass. Is this enough water circulation. Should I upgrade to the 750s. The tank seems to be doing ok. slight hair algae problem and have had some leathers and other corals die off on me in the past. Water params are confirmed fine (my tests as well as LFS) and I perform 25% water changes every two weeks. For lighting I have the Panorama Pro (new dimmable model) Its cranked up to around 65%. I look forward to hearing back. Thanks