I'm kind of new around here,but,I use 4ft rubber oxygen hoses that are laid down in the channels of my 4.5ft by 4.5 grow tray.When the pump comes on to fill my ebb and flo It looks like a hot tub with so many bubbles! Use it if you like,It works for me!Oh, I also have a water pump and two arriation stones going 24/7 too in the res.Prospector