have you been finding that you want your cubes to be almost dry? I think my issue is I am trying to clone with them waaaaay too wet and its not working out great for me. Thanks for any insight!
It took me a couple rounds to get used to these but now I love them. The air/water ratio is better than rapid rooters so they root much faster. I've taken about 300 cuttings in the last month. Some were in Rapid Rooters, some in rockwool, plus my cloner. The rockwool rooted as fast as the cloner and had a healthier mass.
This is the method I'm using for now.
I take a gallon of 5.8 ph'd water and mix 4 tbls of Azo and throw the rockwool cubes in to soak for awhile, usually overnight. When I pull them out of the solution I give em a gentle shake and set the cutting in place. And as
@colocowboy said, don't squeeze em. You want the integrity of the cube to stay in tact for o2 exchange.
Then I just throw them in the tray on top of heat meat, spray the dome down and cover. About 5 days later I'll check the cubes and if they're too dry I re-wet them a little. From what I've observed, by the time they dry out, the wounds have healed and have started to forum calluses. Once the roots start poking out, they seem to dry out much quicker. Then usually within 7-14 days their ready for beer cups.
The only down side I've found to this - the Azos leaves a little residue on the leaves which can be startling if you're paranoid of PM...and I am.
So far I've bartered a shit ton of clones out with my local growmies. I even got a two-axle trailer from one trade, lol.
The rest I've gifted to spread the love around. (still have a couple to ship)
edited for clarity - still on my first cup of coffee