thanx for the reply HomeLessBeans.
no RO just tap water which is pretty hard where I live - 0.50 - 0.55.
AFAIK Canna Aqua is not made for RO water.
I'm topping rez with plain water for the last 3 days to keep in under 1.8
Why drip clean instead of Florakleen?
And what is the point of letting PH...