To be honest I am not a
Kalk expert, I can just tell you what I do. Basically I experiemented very slowly with the
Kalk. I assume you have watched the
Kalkwasser podcast that Rob did, if not go no further until you do. It explains mixing and preparing the
kalkwasser. From there I took measurements of the
PH,
ALK, Hardness (dKH) and
CA. None of these levels were real out of range other than the
CA, I was low.
I dosed a small amount of
Kalk, at night (because it raises
PH and
PH drops at night), I started with 1 liter that was dosed at 125ml/hr for 8 hours. I dosed that for 2 nights and my
CA went from 300 to 350 and my
PH went up only .03. I continued to dose that level for 8 more days and my
CA levels raised to 450 and my other levels remained within limits.
Now that everything was normal level wise I had to determine what my uptake was. Basically determining how much you use over a period of time. My
CA dropped over the next 10 days to 350. So on average I was dropping 35
CA units a day. I could dose a small amount daily, but I choose to only dose about 1500/ml every 10 to 15 days.
I should really dose on a regular basis, but since the
Kalk can go bad over a period of time, I choose to dose a large amount over 2 days rather than a small amount over 15. If I take my readings and my
CA is 350 or lover I dose, then I test again.
I assume my needs will change, as I am planning to add more SPS corals to the tank.
