A Andrea New member Jul 12, 2009 #1 I recently enlarged my pond and put in various plants, sand & rocks and this brown scum is growing all over the place. Is it that there isn't enough water coverage by plants b/c it gets a lot of sunshine.
I recently enlarged my pond and put in various plants, sand & rocks and this brown scum is growing all over the place. Is it that there isn't enough water coverage by plants b/c it gets a lot of sunshine.
