thanks for the replies. Still no clue what happened and why it is happening. I was only doing a 10% water change (RODI water) once a week. For 3 months everything flourishing and growing. I did the regular 10% water change (checking all parameters, heating it to exact temp, etc) on satuday morning. Woke up Sunday morning to most everything dead or closed. Thinking something got in the water, I ran to Dennys to get water and did an emergency 60% water change. Monday, more die off things no better. Ran to denny's again (now i'm thinking copper got in my tank?) and had them test, all parameters including copper and nitrates are perfect. I still do another 60-70% change. After the second major water change the torch and frogspawn start to open a bit, zoa's closed, xenia and leather and crabs, and some snails dead. and now the live rocks are starting to turn white
i figured at some point I would run into a problem, but thought I'd know the cause. I can't think of anything that could cause this, perhaps I rushed things, but wasn't expecting the whole sale die off. The 5 fish are doing fantastic though, they are unphased. I was hoping stuff would come back, but will start scrapping off the dead stuff this weekend to try to avoid an ammonia spike. I just wish I could figure out what happened, i can't believe my hammer stinging my xenia could cause all the immediate die off (not a problem anymore since its all dead).
Any and all ideas appreciated? I seached for hours online and went to two LFSs for advice and still stumped. Hoping it was just a random act and I can go back to the bliss of a happy healthy tank soon.
- James