I at one time in the years had a bunch of rock was infested with them. They were in every rock. So I dipped each rock in cold freshwater and shook them out. I didn't realize how clean they really did keep my tanks over the years. Now I NEED some in my tanks. Wished I didn't do that to my live rock years back. They may not look good. But they do serve a really good purpose, especially when your tank had a food overload.
Hope thats helps.
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~ LeeWorld ~
"Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
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