The first thing is to not spray water or nutes on the clones themselves. Just mist the inside of the dome with properly ph'd water only. The jiffy cubes will hold enough moisture without adding any more. Temperature control is one of the keys to producing good clones. I try to maintain a temperture of about 75 degrees inside of the dome or if in a EZCLONER 75 degree water temperature. I do not know how long it takes for the paticular strain you are cloning but I have seen it take as long as 20-25 days for some to root in jiffy cubes. The main thing is to be longanimous.