i see a really nice ebb and flow system here: http://www.hydroponicsonline.com/11plan01.htm
any one can build this thing in a short time, but i have no idea how strong the water pump should be. Can any one tell me how strong in gph (gallons per hour) a water pump should be for this system? How strong is your water pump? (if you use an ebb and flow that uses a pump).