Need some help starting a hempy bucket

Yes I am a newbie. I'm 64 years old in 25 days. Just so you know. I plan to start a hempy bucket this weekend. I had a problem on my first grow, a DWC. Over one month and never got roots out of rockwool 1.5" cube with GH Farm Kit dripping. Started seed in a rw cube under 4 bulb T5 2'...