Green Water Column
hi Alan
i have to agree with Jonathan your algae went acexual,or maybe you left your lights on for a long period and still is algae bloom.only seen this when i tried keeping my halides on for about 16hrs a day it hapened i think few days later.all i did is floss and over skimmed.cut down the photo period to 8hrs for 2wks then back to 12hrs/day.(and added few more pumps to the tank for more water exchange)
no animals died.
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