I would swap it out and let the stuff in there now dry out before reusing (assuming it is otherwise clean). Snakes and flowing water can be a very wet thing - I used to use the ReptiFlo250 in a couple of the tanks to get the humidity up - and on a regualr basis I'd wind up with water all OVER the place. It looked nice when it worked but was too much of a PITA so I finally ditched it in favor of a much larger water bowl and contac paper for the lid (and THAT solution eventualy gave way to tupperware).