hello i have 20 cuttings they have been in 4 inch rockwool for about a week now my friend sprays them with water a rhizotek solution when the lights go out but they are not showin much groth and no roots , how are you suposed to water thm and how often ? we soaked them halfway up the rokwool for 5 secs in ph5 earlier on tonight and drained it out a bit ? any help plese? they r under 2 600w abouut 10 inch above them with no dome and a little fan blowin on them