little things on sand! Please help :/

Conski

AC Members
May 8, 2009
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:confused: when i look really close at my live rock and or my sand, i sometimes see these little like bug things crawling across it... what are they? and are they bad?
 
o thank god, i thought i was having a little outbreak in my tank and was starting to panic haha! thank you :)
 
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