I have read most of the article on using kalkwasser as for replacement of water lost. I have a 180 gallon tank the water evaporate very fast, it seem to evaporate more then a gallon per day. So my question is what is the right amount of vinegar and kalkwasser I should be using for, assuming I am using 7 gallon a week for my water replacement. I do worry of putting too much vinegar in the tank. I mixed vinegar and kalkwasser first before mix it with water. The article suggest 15 mL vinegar for every 1/2 teaspoon of kalkwasser per quart of H2O. In order to mix a gallon of water, I would need 2 teaspoon of kalkwasser, and 60 mL of vinegar. So for a week I probably will use up to 300 ml of vinegar. Isn't this too much to put in the tank for 1 week. Any advice is greatly appreciate.