| Don't know if the filters you mention take out minerals. If you have hardwater, the best is to do your watering at the sink and run large amounts of water thru the pot each time you water. I used to raise the PH of my water by mixing with a little phophoric acid, which helps to disolve the old minerals out. Need to get the phophoric acid at a chemical supply house and you need a ph meter to get the mixture to about 6.0-6.5 ph. But just running a lot of water may be enough. Deionized, rain, RO, or purified water, but not spring or drinking water is OK.
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Cynthia
Prescott Orchid Society |