Seen discussion about dogs and borates, but have not really seen much about children. My 2-year-old loves splashing around the spa - and, for whatever reason, loves to drink water out of the pool. This is not just accidental swallowing: this is outright sitting with just eyes and nose peeking out of the water and lapping it up. So, other than the obvious (you drink a lot of water, you're going to have really heavy diapers at some point), are there any other adverse effects? I'm trying to get him to understand, but I'm sure it will take some time. In the meantime, how much is too much?