Some of the hydro boys can answer this better but the only issue I foresee is priming the pump if the tray is dry. You can get self priming pumps but not sure if they are any good or not.
With a non priming pump I imagine you will require water in the tray at all times to stop air locks
I used to use a 1/2L car oil change syringe and remove runoff by hand It gets old quick tho
Bookmarks