James wrote:
You can reuse the water better to flush your toilets.


If I were living under water restrictions I would do so. I once lived in
a Virginia Beach when strict water restrictions allowed only 50 gallons
of water a day per person. We learned how to seriously maximize all
water use. But I doubt I will be hauling hot tub water in to the house
for the wc anytime soon.
I just want to use it in a convenient manner yet not kill off my plants.
I only need to drain/refill the hot tub every 3 to 4 months, so it won't
be a frequent issue at that.