Randy Holmes-Farley
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My Tank Thread
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I've ran into that issue myself and decided to stop using Kalkwasser and went back to 2-PART only. I didn't see the point of dosing multiple solutions and using multiple dosing head to get the same results. To explain: I had to use several dosing heads for Kalk because each head was limited to 1000ML per day.
The usefulness of kalkwasser, while still an excellent choice, has been reduced by the fact that one can now DIY two part additives with the same pH boost as kalkwasser by using sodium hydroxide for the alk part.