how to kill algae without dosing? i am trying a blackout to see if it works. i have a refugium but idk if it is doing anything but perpetuating the uglies. i might get chemipure blue elite. if the issue continues, what kinds of corals/inverts are more resistant to algae. i would like dresea clam and bear paw clam if i can find them. my invert book says they are hardy and dosent talk about algae smothering. my specs will be 300w reallasy light, chinese filter (400 gph) i am considering a powerhead to get rid of my filter bubbles but im scared of killing my file w/ the powerhead