One of the problems with having a lot of watery output is if you aren't on top of it the output breaks down the appliance seal and you have to change your appliance more. At least that's what happens in my case.
I drink water all day and night long and use electrolytes to compensate for the loss of so much fluid thru my ileo. I don't expect to have thick output and don't use as much Imodium as some do. I change my appliance every other day so some break down of the seal is tolerable. (I have a problem fit so need to change it so often.)