- Joined
- May 27, 2020
- Messages
- 173
- Reaction score
- 174
So I’ll start with my tank has been up and running over a year now. Tank has always been great and never had any problems with my corals. Tank is a 90 gallon with a 55 gallon sump. So here is my problem. About a month back my light went into disco mode (timer failed and was flashing in and off). I had a brand new light sitting here for a upgrade I am planning (same light as was on it). 3 days after the new light was installed I had cyano covering my tank. So I turned the lights off for 3 days and one the day I turned them back on started weekly 20 gallon water changes. I am on week 4 now of 20 gallon water changes and all of my monti’s have bleached out and my zoas have not opened in over a month (no melting and still showing some color on skirts with them closed) and my acans have fully died. But my frogspawn is looking better than it has since I put it in my tank as well as my other sps and chalices. I did some testing today and nothing is really super high compared to where it normally is. So anyone have any ideas on what I am over looking? I’ve played with the lights in 3 day intervals from 5% up to 75% on blues and 5% up to 50% on whites and there is no change in the corals not opening just the ones that are still doing great