03-10-2013, 01:45 PM
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Originally Posted by VerdantGrotto
I did however get another bottle of RO water (for the jug) and this water has some added minerals for taste. I was curious as to if the minerals added were undesirable for fish. The research I've done is inconclusive...
Disclaimer on lid states : Mineral Amounts are not nutritionally significant
Minerals are as follows :
Calcium chloride and magnesium chloride are both in liquid fertilizers such as Flourish Comprehensive. Calcium and magnesium are the principal mineral salts that determine the GH of water. So in this sense, they are not going to harm fish, generally speaking. Potassium bicarbonate is similar, though the bicarbonate aspect deals with alkalinity (KH).
Soft water fish obviously have no need for these, so adding them is not going to be beneficial. But as you are increasing the tap water, presumably which has more calcium, magnesium, potassium, you are simply going in that direction.