Need Some Help.

[bluespotocto]

I have a 75 gallon with 2 250 MH and 2 65 watt PCs. I have fish and corals in the tank. For corals i have a couple monti caps, a birdnest, torch coral, some zoas, and a challice. All my corals look ok they are starting to brown out a little and the challice is starting to bleach around the edges. I dont think it is growth because it is a lot of bleach on one side. I did recently take my heater out of my QT tank out of it. So to get rid of the copper i soaked in vinegar over night and then scrubbed it the next morning. Could i have not gotten all the vinegar off and that is bothering the corals? Is it possible the challice is not getting ENOUGH flow or to much light?

Params:

Alk:9.3
Cal:460
Mag:1460
Po4:0
Salinity:1.025
Nitrate: 0
Temp:79-76

 

[Reef Bass]

If you're looking for chalice advice, you might do better posting in the LPS forum.

Offhand I don't think a tiny amount of vinegar would cause what you describe.