Had to cut clones this am so ill share a few tips I’ve found using rockwool.
After you soak, very lightly, I mean very, squeeze and hold at sorta an angle to remove some water. Then I shake them slightly and remove more, you don’t want them to be super soaked because you want them to get dried up, within a few days. (Once there getting dry i spray bottoms slightly every morning and every night until roots start. Then you can give more water. You want roots to search for water, and if there to wet it can cause the stem to rott.)
After you remove I’d say roughly half the water put them upside down and poke your own holes, not in the center but half way between center and the edge. I do this for 2 reasons. It will help hold your clone up, I’ve found the hole that’s provided is always to large. And secondly it makes it a bit easier for roots to find the edge.
Using this method ive found that on average it takes about 8 days to root. I’ve seen as little as 6 days but never been able to recreate what ever happened there. I’ve also seen longer if I forgot to soray them. It’s pretty risky, if you forget to spray they can definitely die. I’ve seen them shriveled mess before and come back as well, just to experiment and gain something from my f up.
