wen I use rockwoll once ive soaked it ect before ive put clone into it youll notice it will be heavy and wet as it takes in and holds a lot of water...once ive placed my clone in I leave mine a good 5 days then chek rockwool you can usually tell if its dry as it goes a lighter colour then I just spray it a few times so it dampens it . usualy when cloning to your leafs mite droop a bit in first few days...don't let this make you think its dead.....just leave it and it should come on.....me pers its a 50/50 on clones thay iver gonna take or not.....rooting will take usualy 7 to 14 days