Hydroton only watering schedule need help

I'm switching to hydroton only as my medium and cant find the best watering schedule for my plants. Any hell would be greatly appreciated!
I've got 64 plants with halo top watering rings. All of the plants are in 5gal pots and are sitting on flood tables which recirculate it back to the reservoirs. Question is how often should they get fed? Thank you again

5 cycles...15 min each.
1st right at lights on.
Spread the next 3 out evenly.
Last is right before lights out. Carries the hydroton moisture over during lights out.

Thank you! So basically Saturate them pretty good and then let them dry? Have been a coco grower and just switched so I'm a little nervous and would rather not lose one of my rooms lol