Da Almighty Jew
Well-Known Member
after i bubble my tap or ro water it comes out at about 8.2 or so. If i leave my ph pen in the water it comes out to about 6.9 after 5 mins or so. Maybe thats the same with your water?
I use domonite lime to ph down. You'll find it at your lumber yard in the concrete section.
...the problem with the dolomite lime is that it takes months for it to become active...it's best to mix the lime into your soil and let it sit for several weeks before you use it.
I had a buddy who used organics in a deep water culture with ro water it almost killed his plants he didnt have any beneficial bacteria to break the organics down which allowed bad bacteria to cultivate and cause nutrient lock