My diy scrubber is about 4/weeks old. 10 inch wide screen, 300 gph, lit by 40 watt (actual wattage) cfl on each side.
First 3 weeks I cleaned every 7 days, in sink, leaving some algae behind. Now after 4 days since being cleaned, I have thick dark algae.
Should I stick to every 7 days, or can I let it go longer?
And lastly, the chamber which the ats since in is coated with green algae growth. I am guessing it is the extra light getting to the sump unblocked. I am using 5 inch metal reflectors (heat light type)
Is this algae bad , and should I try to get the light just yo shine on the screen, and none peripherally on the surrounding sump glass and baffles?