I have tried almost every way imaginable to a college educated stoner (some good ideas some not so good..lol)....but do have 35 yrs growing under my belt so he's my 2cents.....those ebb and flow tables work pretty good if thats a what Im looking at...roots tend to clog up drains and the light will produce an algea layer on most everything exposed, including your root masses out on the table....it still works but here what this lazy grower would do....go to home depot and buy yourself some foiled foam board...comes in 8x4ft sheets....cuts with a razor knife....cover yor table and cut holes where your containers are...done deal....all roots and table surface in the dark....the foil will also provide some nice reflection right back to your lower buds....not much work involved and all issues eliminated...Yankeetransplant