i am using dripers to feed y plants, should i run the drippers all day or should i have a feeding schedulae and set the pump up on a timer, if so how should the scheduale look for 18 hour cycle and 12 hor cycle

The watering schedule will depend on the medium you are using. A medium like hydroton, which holds no water, will need more constant watering than a medium like rockwool, which holds lots of water.

From most frequent watering schedule to least...

hydroton/gravel...
perlite...
coco coir/soil...
rockwool

So before your question can be answered, people need to know what you're growing in.

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My first DWC grow - Great Success!

im growing using expanded clay. ready to start?

I read in your "ready to start?" thread you had airstones in your res. With airstones and expanded clay pellets you could have your drips on low constantly.

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My first DWC grow - Great Success!

expanded clay- hydroton

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Build your own-DWC Bubbleponics,Drip System Cheap
I didnt invent hydro but I was there.
What you grow is only as good as what you know

i figured a contant drip would be ok because it seems like my roots will be getting enough air, thanks for the help il try it out, if they seem to get to much water il try somthing else right, trial and error.. il be taking a journal and il be documenting evrything with pictures more detailed so il syay in touch

Keeping a good record of your grow will help you figure out what works and what doesn't. I highly recommend it, it makes trial and error much easier.

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My first DWC grow - Great Success!