Thanks much willydog & rollinfatty.
I wanted to post the info that I was needing badly some years ago.
Took me a while to get it right when first working with rockwool cubes. Like everyone, I overwatered my first few batches and made them really slow (like 3 weeks...).
I think I have it down pat now, but as soon as I say that, clone-eating fucteria from the planet Gorgonzola will invade earth and teach me a thing or two.