[untamed]

Here's the basic logic. Only testing of your Ca/Alk will allow you to determine how much Ca/Alk you need to add/replace every day.

You can control the how much Ca/Alk in two ways:

1) Control the concentration of the kalk. This is difficult to do. Most people just mix a saturated solution (2tsps per gallon).

2) Control the AMOUNT of solution you add. The amount you can add can't ever be more than the evaporation that you have, or you will be adding too much water. The amount you add each day is what you are going to control. If testing says you need more, add more...but you'll never be able to add more than evaporation lets you.

So...what you are controlling is the total AMOUNT of saturated Kalk. You can't just dump entire amount in all at once, so the dripper is designed to add that amount slowly. The rate of the drip isn't that important.

Say you determine that you'll start with 1 gallon of Kalk per day. Set up the dripper so that the 1 gallon goes in as slowly as possible, but all that gallon gets in within 24 hours. Test for Ca/Alk. Track the Ca/Alk over a week time. If the Ca/Alk is dropping, increase the amount you are adding.

Be as consistent as possible in your Kalk addition and the time of day that you measure the Ca/Alk.

That's it!