DEPENDS ON YOUR SYSTEM I WATER MINE 1 MIN EVERY HOUR FROM 8 AM TO700PM 1MIN AT 11;00 AND 1 MIN AT 3 ON A 12/12 LIGHT CYCLE
I DONT THINK THATS ENUGH TIME FOR YOU CUT BACK TIME OF FEEDIND BUT FEED MORE OFTEN THAT KEEPS ROOTS WET BUT YOU DONT WANT TOFLOOD THEM