I have a little red slime right now.... Grrrrrrr. All my levels are spot on. No phosphates, no nitrates. Lots of flow and new bulbs. I run GFO, carbon and bio-pellets. I seem to be winning the battle though. I just constantly stir up my SSB and adding Ultra Snow once a week. Also, blasting off my rock with a turkey baster once a week. Not sure what else I can do but it is not spreading anymore and seems to be retreating a little...
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