Join Date: Mar 2010
Location: Union, New Jersey
Kh and pH relationship using RO?
So I'm doing top offs and water changes with RO water.. For top offs I just pour the straight RO water in there with nothing added. For water changes I use seachem equilibrium. But for kh I just added a little baking soda to the new water.. Now the RO water that's going into the tank is at 6-7 GH, 4 KH, but the pH is reading at like 8.0.. Before I put the baking soda in there was no KH reading and the ph was ph<5.. My tank for some reason started with 4 kh and now is up to about 8-9 and the pH is 6.8-7.0.. After the water change the pH is around a 7.5 and the kh is 5 in the tank. Is this to much of a ph and kh change in a short period to effect the livestock in the tank? Is this normal, heh? I would guess that slowly the CO2 will lower the ph over the next couple hours back down to 6.8-7.0 but what does everybody think.. I'm new to RO.. Thanks.