Originally Posted by HD Blazingwolf
the surface of the water does n't appear to be moving much. having a little surface movement is beneficial and helps add oxygen to the water
BGA is commonly related to low nitrates and oxygen levels. it is an anaerobic bacterium. it thrives in areas of low oxygen.. this is a fairly clear indicator of low oxygen levels in a tank.
I put in a small powerhead yesterday to move the water in the far end to the near end some.