I need to know a good timing for top drip system with 1.5 inch rw in net pots with clay pebbles. I have it set 3 times a day for 15 min. I do have another timer that goes down to seconds. I was wondering if I slow the drip emitters...

This LED lights are new to me.when installing it what wattage n light height is a good starting point they have been under 1000 watt hid so they accostom to strong light  35% at 22" sound good