CUC in a ULNS

[TonapahNorth]

I am having trouble keeping a clean up crew. can people share what they are doing for clean up crew? my snails die and crabs dont last long

[Bugger]

Is there not enough food in the tank. Has the tank been treated with copper

[mike1970]

i have a CUC, just get a small one, in my 120G i have few snails (12-14 trochus) and 5 or 6 hermit crabs. that seems to be fine for me. do not go for those CUC packs that's way to much stuff, start small and add if you think you need them.