10-20-2006, 03:11 AM
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There are a few things combined that will help a lot. When doing the water changes, do a gravel vac in the sandbed around the rock and anemones. Be careful to control your water flow coming out so you don't suck out the sand, but once the sand is cleaned, the cyano will back way off, you'll remove a lot of organic waste. Also, when vac'ing, use the hose to suck the "silt" off of the rocks, as this also feeds the cyano. You can do this and suck the cyano muck right off the rocks at the same time.
Along with that, be careful not to overfeed the tank, and for critters, blue leg and scarlet hermits will help, but in a tank that size you're going to need a lot of them. Nassarius snails, sand stars, brittle and serpent stars, and diamond gobys are all good for keeping the sandbed clean. The trick is to keep the nutrient levels in check and to gather the critters to help do so. Adding more live rock can sometimes help, too.
There are a number of animals you could add, but I'd stick to getting the maintenance crew stocked before trying to add more fish, considering the circumstances.