[atzak]

I recently redid my entire system. all my messing around caused an ammonia spike, lost my xenia and acros. Most of my zo's were very unhappy for a bit. The water is fine now, some zo's are fine, others look healthy but have lost their color. There are a few that I don't expect to recover at all. Will the the ones that lost their color regain the old color, or do I just have a lot of dull zo's now?