I have no clue, Sam. I'm using the MG moisture control stuff with 0.21-0.07-0.14 nutes in it and EBMUD tap water that has sat in an open container for weeks. I water with about 1.5 qt when my cheap meter reads on the moist side of dry, every 3 days or so. They never get droopy or sit in standing water. The girls, Mary and Jane, (original, i know), were transplanted as is (unseparated) in their rockwool cube into a 5 gal cat litter bucket with a ton of holes in it, on blocks, in a tray.
I know that not separating them was not a good thing, I'm doing some LST to keep them to the sides of the bucket. Here's an overall pic.... Thanks for the feedback.