Hey BC -- I'm afraid I have zero help for you on soil -- that's a grow medium I'm only used to for strawberries and blueberries. In Hydroponics, you want to water during the daytime. Generally you water when the lights turn on and off, and then sometimes inbetween if needed. Right now I'm on 2 or 3 waterings per day. The front plant in the center of B has claws all over it which indicate overwatering, yet no other plants are, so I've been trying to find a happy medium. At night the plants cant really do anything with water or nutrients, so while you could water them, it wont really do anything.
Soil, on the other hand, I have nooooo clue!