I re-started my tank in January. Everything was going as planned, tank cycled, went through the diatoms, started to get a little green hair algea. bought a clean up crew from John at reefcleaners. Kept my few Damsels that I have had for 6 years. Added a Kole Tang, and he was doing great. Clean up crew starts doing its job. Tested params on a regular basis, along with water changes. Later added a Tomini Tang. Took a little while for the Tangs to get along, but they did. Everything was great, everyone getting along, and everyone eating well. All of the sudden, the Kole looked pale, and in 2 days was dead. No ich noticed. 2 days later, the Tomini gone. Now I have been losing a fish a day. I cannot figure out what is wrong. I have checked params, checked for stray voltage...cannot diagnose the problem. If I lose the last 3. I am going to condense my 3 other freshwater tanks into the 150. I give up.