Wanting to add a CUC and cleaner shrimp to my new tank but not sure if I should QT them or not. I am mainly worried about Ich and although the chance may be small there still is a chance that new inverts could introduce it to your system. Maybe the best thing would be to purchase inverts from a place that does not keep fish in their invert system so the chances would be extremely low. Unfortunately my LFS does put a few fish in their inverts tanks, I wonder if LA has fish in there invert system?