I just did another water change. Haven't had time to test parameters but I haven't lost anything else. I've got more problems now, my main light went out. I believe it's the power supply and I'm trying to track down a new one. I'm going to post a new thread about this but I'll ask you all too. I have a cheap "green element" led fixture that I bought from Aqua Traders. As I get online to try and remedy this thing I can't find their website. My only conclusion is that they went out of business so that's great. At any rate I need a 24 volt 6 amp power supply to get the light going and I'm not having luck finding one of those either. Any and all help is greatly appreciated.