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Increases PH and KH. 10 ml to 40 l water increase the KH by about 1 ° dkh. JBL Calciumarin should be used to raise KH and calcium in sea water. Before manipulated on the pH value, you should deal with this topic a little more. It is always very important to determine the KH (carbonate hardness) beforehand because it stabilizes the pH! If the KH is below 4 ° DKH, the pH value is so unstable that the slightest encores of PH-Plus can lead to serious problems. As an alternative to JBL PH-Plus, JBL Aquadur Plus would be added to increase the carbonate hardness.
In the house lives a pair of snails. I feed them separately in a box of 1.5 liters. The water in the tap is very soft. so that the snails would have a normal "house" add this substance.