if you want a fail safe way next time use Jiffys put them in warm water PH level 6.0 take your cuttings cut on a 45 angle split the middle of them stem put in your cloning gel and put them in the jiffy in the same black trays and you will have rooted clones with in 10 days works every time never failed me once
rockwool is slower but if your growing in hydro then you will need it but i use jiffys and plant in coco and they have never failed me i love them good luck they still look healthy but that is a long time make sure your not over watering them with the jiffys i never even water them after the first per soak over watering in rockwool will slow root growth down and put you at risk of mold
