Need info about Kalk

[mark]

Anyone doing Calfo's method (small amount of kalk, starting 1/16tsp per 100g mixed in one cup of water and added directly to tank)?

[Farrmanchu]

I do Calfo's method, but I only dose Kalk now and then. I just mix it in a cup of RO, let it settle while I drink a Coffee, then pour it in the sump. I stop pouring before the settled stuff leaves the cup. I only do it close to WC time, when Ca and Alk start to drop.