Hi everyone, I recently rescaped my tank from scratch after a move. Had a good system that had been running over a year before and two cleaner shrimps along with it. Everything old has been moved to a fishless coral quarantine tank. New tank has new sand, dry rock, etc. A couple weeks after I cycled it, I dropped in my fish and corals and they all are doing fine. About the same time before the ugly algae phase took off, I added my cleaners and snails and the cleaners quickly perished. Was kind of surprised, but I guess something in the water was not right and the tank wasn’t ready yet. Checked copper, it’s zero. Fast forward to now, my tanks been running for over 2 months. I’m past the diatoms, but getting Cyano on the sand bed. Corals and snails are still doing great. I’m wondering if it’s be okay to add a shrimp again. Thanks!!!