I am looking for a run off tray that fits inside the tent and covers the entire area. I am so sich of having to faff with 20 different saucers. I could do with one huge run off tray and when the run off builds up after watering I can just have a hole drilled with a plastic plug, unplug to drain and then plug back up. I can drill and fix a plug myself, but finding a 4.9 x 4.9 tray if proving difficult. Any recomendations would be great xx