I was flooding for15 min on it only took 4 min to fill planters,,,then 45 off..all day untill 6:00 pm It went to 15 on 2 hrs off ..Allthough in the beggining i was flooding 15 on 15 off all day and night untill I saw leaf burn..then started cutting it back. I think it was to late though pllants never seemed to fully regain themselves...thats when i decided to either buy a systyem or build another kind of system...I now have decided to build a simple drip system...With a 8 piont drip head with 1/4 inch drip line to each netpot ontop of my reserve so all dripping nutes go right back into reserve tank....I can asdjust timer easier with room for error....And J/B waterweld two bubble wands onto the bottom of reserve tank...Roots I think will be alot happier.... Any other sugg... would be appreciated???? Thanks for asking