Grow Mediums Need help setting Hydro timings :(

[deviney]

Hi i recently sprouted 5 new Auto Anubis that i will be putting under 600w but it is my first hydro grow and was looking for some advice on setting up my timer plug to feed the plants

I was wondering how long to water my plants and how long between each feeding?

Also do these times change as they get bigger?

EDIT: am using the Wilma 4 pot system and clay pebbles as medium

 

[Roark]

Pictures help out, sorry I don't know what a wilma system is. Water as needed. I ran my hydro every three hrs when young like yours then every two hrs 24/7. Hopefully someone will come by who has more thoughts.