GMSgrowsanswered grow question 5 years ago I myself always use a bubble cloner so there is no need for humidity control. A little Tupperware container, drill holes in the top just a little smaller than the sponge pucks, a good air pump and a few air stones and your clones will start in 4 to 5 days and be ready to plant in 6 to 7 days. 100% success rate for me. Cheers