green hair algae in overflow

Authentic

New member
So I have a 65 gallon display tank with a 21 gallon frag tank attached. Not much of a problem in either tank however I always find clumps of green hair algae in my overflow. I've gotten into the habit of cleaning it out once a month however I am wondering if there something I am missing in my water parameters or tank maintenance which would preclude this from happening altogether. Phosphates are always under .05
 
Every tank has the potential to grow algae, regardless of whether one thinks their nitrates/phosphates are zero or not. In your case, GHA is either being outcompeted in your display and frag tanks by things like coralline, or it is being eaten. Either way, a good thing. Think of the algae growing in your overflow as an 'accidental' scrubber, remove it as you see, and forge on!
 
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