Hey how is it going?
When I use soil I will do a run off to check the ph/ppm to give me a more true reading, also I let the soil tell me when to water. You will notice a big difference in the weight of the plants when watered and dried. You will also notice the soil sep from the container.
If you feel (by looking) that your ladies need more N then give it to them, you can always flush if its to much. *I'm not saying to over do it* but you know that...
For clones give it time- it can take up to three weeks for roots to pop, if not longer. Some ppl say that they can get roots in 3,6,11 days. Sometimes its faster and well some time its slower.
Good luck. and nice set up.