Yep, I got a few of them myself. As far as the slime, a lot of others pull the rock out long enough to use a soft toothbrush. To avoid disturbing the rock, I, personally, have a piece of stiff airline tubing that I connect to a 1/2" hose that siphons into the felt filter bag in my sump. the suction is enough to pick off loose debris, and wayward sand without disturbing the surroundings.
Mike
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55 gal FOWLR, SeaClone 150 skimmer. 2" LS, 50# LR. 29Gal sump/fuge ViaAqua 2600 pump, chaeto, 1" sand, LR
2 Percula Clowns, Scissortail Goby, Black Birdwrasse, Keyhole angel, Lawnmower Blenny, |