cleaning crew death

[Aquattro]

You didn't mention how you acclimated them...

If the tank is new, and you haven't used copper, then that is likely not it.

What animals did you add?

[klee888]

floated the bags for 20-30 minutes and then let them go... didnt think that I needed to acclimatize for cleaning crew.

[Aquattro]

Ya, they (depending on type of animal) can be really sensitive to salinity changes, etc. It's recommended that you drip tank water into holding water to equalize parameters. Although, I wouldn't expect everything to die. I have just dumped 50 snails into my tank (long bus ride caused water to foul) and out of 50, I lost a couple.

[Wayne]

To properly acclimate them you need to drip water into there bag or bucket for at least an hour with a drip rate of about 1 drop every 2 seconds or so. I just grabbed some airline tubing and a valve to build my acclamator. If I was doing it again I would find a U shaped ridgid peice to hang off the tank.