calicium hydroxide question

[rayjay]

Yes, my statement is clearly wrong. Sorry about the misconception.
Kalk, or limewater IMO is a MAINTENANCE regime, and not a RAISING method unless you have pretty low take up of calcium in your tanks.
I dose limewater nightly in all my tanks, to replace all evaporated water.
When I want to give a boost to calcium or to alkalinity I use the calcium chloride dowflake and the baked baking soda.