Just picked up a few CL for my mixed AC tank. Problem is they are 1.5-2" and were almost eaten by my Front. I put them in the sump to keep them from being food. My question is can they stay there for a few weeks to a month, while I get my other tank set-up? Feed them last night a cube of brine and all 4 of them ate well. They seem to be happy, or is this a bad idea?