good or bad??

[rickjames]

In every nook and cranny of my rock I have those things. Didn't think they were a big deal, still aren't causing any problems but a whole patch of zoos on my rock has slowly disappeared so I am beginning to wonder. I have tried the pop bottle trap but that didn't work.

I also have a ton of filter feeding crabs that hitch hiked, they are cool little guys.

I swear must have gotten at least 100 hitch hiking crabs in total! An added benefit though is that all night they pick the rock clean of any algae.