I usually take the plants out and let them drain in the bath. Otherwise any runoff ends up in their saucers which will get emptied. This isn't ideal if more plants end up in the tent so i wanna develop a better plan. Ideally I want the drainage from all the plants to collect into one spot(container) which can then be emptied. First step is to raise the plants on some kind of platform, just not sure what that platform could be...