I've been feeding my betta cooked peas once or twice a week to keep him regular. So when he poops, it looks green. And he eats it! I know this because once or twice I've noticed he was midway through, and when I came back he was done and there was nothing in his tank. It's a glass tank with one layer of clear marbles on the bottom, so I can see if there is anothing on the bottom. He doesn't do this with his regular poo, just the ones that come out green. I usually clean the poo out as soon as I see it, but if I'm not around then he gets to it first. Can this habit hurt him?