I built your 16 plant garden

[Steve]

I am new to this hydroponic system. I built your 16 plant one, Mr. Ron.

Of course I had leaks all over the place but my observations were.

I was expecting the water to completely drain from the system. However it did not. It wont hurt the root systems to be under water? Does the water stay there till the plants use it up? Have I done something wrong?

How long do I run the pump?

How many minutes an hour do i do this?

\ The overflow worked well. I am not sure what to expect.