I have always bought distilled water from the groceries store to water all my plants up until last year when I got a tds meter and found my tap water was around 70 ppm. However I still use distilled water for pots that have live sphagnum in them since I've read that live sphag is very sensitive to dissolved solids in water, so I was wondering if I could get away with using tap water for my live sphag or if it's to risky. A very big carnivorous plant nursury says any water below 160 ppm is good, but I think that's definitely too high for sphag, what do you think? Might just remove a few live strands and water them with tap water to find out.