When i started my new 90 gal tank my ph was at 8.4 but my dkh was low.I have brought my dkh up to 9 now but my ph has fallen to 7.4. Is 7.4 dangerously low? Ihave a bottle of pro-buffer dkh, will that bring up my ph levels?
add kalk and slowly bring it up try not to use a buffer .....7.4 is a little low how are you testing it mine gets to 7.7 and i dont like that too much cause it will go up to 8.2 threw the day ...i have many swings in my ph and i think it is affecting my corals .....do you have a fug cuase if you do you can do a reverse light cycle
kalk will bring your ph calcium and alk up ........you can go to the supermarket and get mrs wages picking lime and use about 1/8 of a teaspone every 2-3 days with fresh ro water then slowly pour it in your tank