Ken, I found this info online:
"There are no hard and fast rules about how much you should drink. Everyone will have different needs from one day to the next. A normal healthy person is recommended to drink around 6-8 glasses of fluid per day, but some people will need more and others less. Use your urine color as the best guide."
https://meplus.convatec.com/articles/living-with-an-ostomy-hydration/
Do you drink more, less or the same as you did before your ostomy?