tap water versus filtered water

[camille1585]

It depends on the filters too I guess, but if your water is quite hard to begin with, the filters do remove calcium, but I don't think it removes it all. Of course, I may be talking utter BS here since i haven't used a filter since moving from the states 10 years ago. But if that water still leaves residues on the leaves, it's obvious that it was not all removed. Filters may filter things, but they don't make distilled water.