LOL, when you mix kalk and then drip you normally only drip the clear solution, that solution can only hold so much kalk before it is fully saturated, so the solution is rather weak with regards to CA and ALK. The waste that collects at the bottom is usually thrown away. You then have to try and have a sealed container so that the kalk comes into contact with as little CO2 as possible. You may be able to maintain CA and Alk levels using this method but highly unlikely you would ever be able to raise the levels. With the slurry method you are adding all the kalk to the system, there is no waste, the solution is very concentrated and will be able to raise CA and ALK levels if desired, thus avoiding the use of any other additives for CA and ALK.I have never understood the debate about whether to just toss your kalk in or drip it in over a few hours !! Surely both take the same ammount of effort yet the drip method (at night) will always be safer and result in better kalk conversion to usable calcium in the long run![]()