From what we have been able to learn, red slime algae is primarily the result of too many nutrients in the tank. We are struggling with it now. We have been reducing our feeding and increasing frequency and volume of water changes. We also added a few brittle star fish to supplement our clean up crew. It seems to be going away in line with our reduction in nitrates (got pretty high for a while). Also, we just picked up two orange spotted sand-sifting gobies, and those have been helping us get rid of it - and they're cute to watch while they work.
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