Help!!!!

[VegasRick]

What was said above, I agree for the most part, stop all dosing except ca/alk. A couple of water changes to get everything back in balance. Only thing I have heard where Potassium is needed is on a zeovit system where the bacteria appears to use it. Regular water changes should keep potassium at levels needed otherwise. AA and iodine are questionable and I have seen plenty of tanks that look and do great with adding either of those.
What fish do you have in the system? something picking at them?

 

[swannyson7]

If I had to make a guess, I'd say that your parameters got out of line due to excessive dosing, which stressed the corals and then the change in flow put them over the edge, but that's purely speculation. I agree with M and M & Rick that you should do some water changes to get everything back where it should be and above all, stop the dosing of AA & potassium.

 

[J Rog]

Thanks everyone! The only things i dose since all this started is Alk, Cal, and Mag. i will not dose anything else and will do a couple more water changes. I will update when i notice an improvement.