undbulsu
Aquarium Advice Apprentice
As I have a ready supply of r/o water I want to use it in my planted tank. It is heavily planted, with @ 3.5 wpg and Co2 injection. I try to maintain a pH of 6.6 and a kh of 3, giving a Co2 level of @ 22. I use Kent's r/o right to adjust the gh and that is working fine.The problem arises when I try to add something to raise the kh level in the r/o water. Obviously adding an alkaline buffer will raise the kh and ph. (I use Seachem alkaline buffer). If I then add Seachem's acid buffer to set the desired ph, the kh levels are too low. I understand the relationship between kh/ph and co2, but what should I try to match to my desired levels?
A. The kh and then let the co2 in the tank drive down the ph?
B. Add both alkaline and acid buffer to obtain the desired ph, and don't worry about the kh?
or
C. Use something else to reconstitute my R/O water?
A. The kh and then let the co2 in the tank drive down the ph?
B. Add both alkaline and acid buffer to obtain the desired ph, and don't worry about the kh?
or
C. Use something else to reconstitute my R/O water?