Planted Tank Obsessed
Join Date: Dec 2009
Location: Saint petersburg, FL
It could very well be a bacterial bloom, but it could also be the substrate, or a combination of the both.
Did you wash your substrate before adding it to the tank, OP? You didn't mention it in your original post. Also what brand is the flourite? From my experience Seachem seems to be fine but the knockoff brands come with gunk in em'.
January winter brings the cold on me, February breezes blow my worries to sea, and March brings memories remembering pain, but April sweet April you only bring rain.