Tank maintenance day

[PoonTang]

Marie, if you are still having troubles with your coraline plugging up the slots on your overflow, just try lowering your water for a couple of hours or so. Corraline doesnt last too long when exposed to air. This is what I do and it seams to keep the corraline away for longer when its all dead for 1/2 " or so around the slots. Whenever I scrape i enivitibly leave a few little pieces behind that regrow quite quickly.