Don'tcha just HATE it when that happens? I have a BTA clone from my big BTA that I put in a different tank. It decided to become a traveler, got into the 1.5" suction screen of one of my Maxi-Jet powerheads. Thought they were big enough that that would'nt happen, but it did. Looked like crap for a couple of months, but managed to pull thru. Decided that it liked living in the surface skimmer box for my Remora pro. I've changed skimmers on that tank to an in-sump unit, but have left the big ugly black box in there for the anemone. Keep hoping it will move out so I can remove the box, but so far, no luck. Oh well, at least it looks good & eats well.