water chemistry help

[iceman86]

I have a couple sps corals in my tank that have been slowly bleaching over tge last couple weeks and last night i did some water tests and this is what i came up with.

Temp—80
PH—7.8
S.G.—1.025
Carbonate Hardness-11dkh
Calcium—500mg/l
Ammonia—0
Nitrite—0
Nitrate—5mg/l

I know the ph should be higher and the carbonate cardness a little lower. The calcium seems a bit high too. I was using instant ocean sea salt but recently switched over to instat ocwn reef crystals.

All the lps and softies seem fine.

Thanks!