My kH is currently at 2 dkH (35.8ppm). Should I raise this before I start injecting the co2? I am currently setting up the DIY system using 3 2L bottles.
ph is at 7.2
ph is at 7.2
If you find that your kh drops and your pH along with it, a good solution is to add a bag of crushed coral to a filter. About 1/2 for a 50 gal tank to start. It takes a while for it to have an effect and over time will disolve and need replenishing.
Buy a dozen claims. Eat them in your preferred way. Put a clean shell in the filter. Repeat when needed.
Oops- dang site rules dont let you edit so I could not add "cup". Start at about 1/2 cup for a 40-50 gal tank.