I aerate my tank 1/2 hour after lights off, and stop 1/2 hour before lights on - hence my co2 is on 24-7. i read somewhere (not sure where) that better not to start immediately after lights off to let no chance for algae to use the O2 - if i'm not mistaken...
damn i cant recall where... is this method proven? correct me if i'm wrong... 'saya budak baru belajar, kalau salah tolong 'jolokkan'...
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i'm a learner, poke me if i'm wrong]