Is it possibly Diatomic algae? http://www.cichlid-forum.com/phpBB/viewtopic.php?t=170906&highlight=diatom It's usually in fairly newly set up tanks. If your water is high in phosphates, you may need to run a phosphate remover. On Jul 14, 2008, at 9:43 AM, Susan Welenofsky wrote: > I've got this and it seems to collect on the leaves of my plants, > but can be > knocked off easily. Some of it settles on the bottom. I've got a > bunch of > it, and I'm not sure if it's algae or something else. If I had a > better > filter, I could probably get rid of most of it. I am trying Excel. Any > thoughts anyone? > > > > Susan W > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member