i use it.
untreated.
from gutter to storage drum (sheltered from elements and insects/pets,etc)
to soil.
simply skim off the top letting the debris rest at the bottom.
if im feeling kinky ill add a few air stones.......
funny thing is....
its pH usually lands at 6.6-6.7 (slightly acidic)
straight from mutha natures tap.
the way i see it....
plants have been drinking it for millenia (albeit before human pollution)
why change what aint broke, right?
.......besides, its free.
i havent heard anyone have adverse effects from using it(rainwater)
(if so.........move. ........for your healths sake.)
good luck
-h.c-
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