Has anyone had problems keeping these critters. Every aquarium I have ever had, I've not been able to keep these guys alive. I've tested everything in my tank and all is perfect. Temperature is a constant 77 degrees. I recently got 150 blue hermits, 100 scarlets and 100 astrea snails. No problem keeping blue hermits or the snails, but the red scarlets seem to start dying the first day and gradually drop off completely within 10 days. This has happened before in another tank and I just quit trying thinking it was somehow me, but this is a different tank and I have everything in it including sps corals. I had 100 and now am down to probly less than 20. And no, I have no fish or shrimp that might like to eat them. Right now there are no shrimp and 3 tangs. That's it. Anyone have similar experiences or any ideas?