smorrismi Posted December 5, 2009 Noob question... what's the green stuff and why is in the sub? Quote Link to comment
Lawnman Posted December 5, 2009 That is the dual light that are no longer available. Quote Link to comment
prtrini01 Posted December 5, 2009 The green stuff is Chaetomorpha. You grow it in your sump to absorb Nitrates. Quote Link to comment
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