I usually see about 6.3, though by itself as a medium; it will hold that pH or similar very well. The carbonates in the calcitic lime will "buffer" better than the Calcium released in dolomite lime and it is fairly evident. For me, running a Quote: Soiless setup; I just have a bit of troubles trying to bring it down with nutes or whatnot. I feel if this medium was used as the peat fraction in an organic soil; the extra buffer may be quite welcome. Personally, I just went back to a dolomite only peat for my mixes, but nothing is really "wrong" with the pro-mix. The only other thing that I could say I didn't care for, was sometimes my cuts would get some purple stripes in the mainstem while rooting into the medium (though my cuts are usually rooted for 1 week in aero type cloner, so decent roots).
@Lazerus00 I've only done cuts 3 weeks in, so I can't help much there.
I always take backup cuts and treat em like crap until I know if they are of value. :D Naw, but I don't up-pot em.
View attachment 527151
View attachment 527152
The bottom of the container is flat. It's pushing itself outta the pot with roots some. Y'all think I should re-pot this yet? :)
Edit : >>Root porn, Class: Bondage