daf said:
there are sooo many diff. times of flooding i am doing 30min on and 2 hrs off, my leaves are droppy dont know if underwatering or overwatering
The flood times needed also change with the size of the plant and what stage of growth its in.
If you ask 20 ebb and flow people how long to flood and how long to wait between floods, you'll get 40 answers.
The best way is to do as you have. Ask, and then try what you think is best. If you have a problem, then adjust the timing.
If you're getting wilting, it *could* be lack of water. If the plants are still rather small and don't have a large root mass yet, your timing might be starving them a tad.
I would try increasing the on time and watch your plants very closely. If they start perking up, then you know you've found the problem.
There are no timings that are set in stone. Its whatever works.
The wilting could be a nute lockout, water temp, nute strength and ambient lighting or temps. It isn't necessarily the flood/drain timing, but that's a good place to start finding the reason.