Both are ok, i used to keep mine at 10 thinking it would help. some people are even higher with everything ok, the swings are what cause problems. Biggest thing is that the higher you are the more you are on a fine line of balance with your calc/alk/magnesium. I run my tank at 9 now since i had a kalk dosing issue one day that spiked my tank. no difference from 9-10 in the corals, stuff's recovering from brown/white skeletons everywhere.
Also.. 9 in one persons tank is probaly 10 in others, our KH tests SUCK. My API test kit showed 8-9 the whole time my tank spiked to 17. salifert said 17, red sea 16. so i dropped it down, and the death stopped in my tank. I did all 3 beside eachother a couple days and was blown away.
|