Was wondering if someone could me what would cause a Ballast to fill on its own. Was out last weekend and never touched the switches. When I went to trailer the boat I noticed it leaning pretty heavy on the right side. Opened the locker up to store some gear and saw the bag was full.
Any ideas?

It was kinda hard to empty too. It would start emptying water at a pretty good rate and then would stop like no water was getting to the pump but had more than enough pressure with the bag being full. I'd turn the switch off then back on again and it would start spitting water out again.