FWIW, the slow calcium rise is expected with limewater (kalkwasser). I used a low calcium mix (normal IO) for that reason.
If you want the same pH effect as the kalkwasser, you'll need to use sodium hydroxide.
If you just want the same alk effect, then you can use bicarbonate, carbonate, or hydroxide for the alk dosing.
The 7 dKH of alk is right.
You can dose that over any period you want.
If you spread it out over 14 days (0.5 dKH per day), then you'd dose about half as much limewater during that time.
If I use NaOH, I calculate that I need 374mg mixed in 5ml of RODI to get 7 dKH based on your recipe.
Obviously this is too concentrated for me to drip over 7 to 14 days.
Did I miscalculate?
Any suggestions on dilution that will still provide pH boost equal to Kalkwasser?