Hi everyone, I am having a serious algae problem since I got my MH (2*150w @10k) lighting (I think that is when I started noticing it) its brown sand looking fluff, I really can't explain it so here is a picture, if anyone can identify and give me any ideas how to get rid off it, its really depressing I can't even see the purple on the rocks any more
just completed a 3 days lights out period and I have change my MH lights to a 7 hour cycle only Actinic still 12 hours.
thanks.
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I have the same thing on my LR, but I'm only running a 2 bulb 36" fixture. (30W/ea - running 15 hrs actinic & 13 hrs 10k light)


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