2 TSP per gallon is the max dose, at which it reaches 100% saturation in RO
water. What I did was measure my weekly drop in Ca
without supplementation or water changes then calculate daily loss. Having a rough idea of how many gallons of daily top off I add, factoring that 2tsp Kalk
per gallon will raise your Ca
by 24ppm, I was able to determine my dosage. My Alk
stays up nicely, but really it's a byproduct of the dose I use rather than calculated.
Start small, & work up if you're not sure. Keep an eye on your Mg
levels as well as saturated Kalk
can cause Mg
to precipitate out.