hey forum. I took a batch of cuttings about 12 days ago, doing everything in my usual manner, (which has proven to be very sucessfull with 95 to 100 percent success) appart from one thing.... i was advised by a local grow shop to try these starter jiffy bags which are a mix of rockwool and perlite. At nearly twice the price of my usual method, soil in little yogurt sized pots i was a little reluctant but he convinced me that they were great. anyway after twelve days theres no roots at all, i opened one up and inspected the cut and its starting to turn a little brown but no roots. the clones all look really healthy and are standing up fine but normally by now im putting the cuttings into there pots and into the room. Ive been feeding with a weak nutrient mix of canna terra and iguana juice. ph is fine, temp is fine, humidity is fine and it was a new bottle of clonex. any suggestions.... any help would be appreciated