Last night I bought a zoa frag and when I got home I noticed there was a tiny crab with zoa's all over his shell. He is not a typical decorator crab, his boby shape is different. His shape is more like the evil hitcher crabs you see people trying to get ID'd. He just hangs out near the main...
I'm moving and I have heard that if your moving an established tank you should replace the sand bed. Is this true and a standard procedure when moving a tank?
