SU2
Omono
They look less healthy as the length of day shortens. That dose to clean pipes is healthy and of value. Bottom line is if you can drink it so can your plants...
If you are worried about it anyways fill water containers with it and let is air off for 24 hours. If you are really concerned toss an inline filter for the house BUT be aware that you should let it run without the filter at changing for a few days so your household piping gets treated proper.
Crystal is a Water and Waste Water Engineer here in PA - that amount is within regulation and safe - it also improves your water quality at the tap.
Grimmy
Thanks, that's very reassuring I really appreciate it!! It absolutely could be (sounds like "surely is" the shortened photoperiod as we get into fall here, I guess that, with the temps still being >80deg every day, I thought they'd hardly slow-down ) This is my first fall with bonsai trees, I basically got into this a year ago and it was just a nasty trial&error mess at that point, didn't really start collecting anything worthwhile til ~2/3yr ago, so definitely unsure what to be expecting as winter comes!
Off-topic, but would the decreased sunlight explain why my (and my neighbors') crape myrtles are exhibiting so much brown spots on their foliage? At first I thought something was wrong with mine, til I noticed it in landscape Crapes all over my area!