Drip system timer for max growth?

I am a first time hydro grower with a 6 plant drip system, I have my seedlings which were rooted in rockwool then placed in expanded clay in the hydro system I made. here's my grow journal with pics https://www.rollitup.org/hydroponics-aeroponics/33534-pictures-diy-hydro-drip-system.html . My question is, at what intervals should I turn on the pump for my system. Each plant has one 1gph dripper at the corner of the rockwool. All the details are in the journal. I am currently running the dripper fifteen mins on, thirty mins off. Any input is greatly appreciated.

Timing has to do with your setup, you really just need to make sure the rockwool brick is soaked every couple of hours. Personally when I used it one hour on three off during the daylight cycle. Having said that though, I had misters (that doesn't look right)... anyway there were mist shooting dealies as well, which most definitely changed things.