So I have three oto cats in my 37 gallon tank. There is definitely algae in the tank but one of the oto cats is twice as big as the other two. And one is definitely the smallest. I have small, small plus, and big in terms of their sizes. I read they like veggies and that is ok to supplement their diet. I peeled and boiled 1/3 of a typical zucchini, pulled some stones from the tank bottom out and used them to fill in the middle of one end of the zucchini piece so it would sink to the bottom. That worked (I was actually proud of myself for thinking of that and it actually working lol). So the smallest of my three oto cats has been attached to that piece of zucchini since 15 minutes after I placed it in the tank - its been 4 hours now. I saw the big guy come by but the little one kind of pushed him away gently and went back to the zucchini. Is it possible he might eat too much of it? I know that might seem silly but since its a supplement, I wonder if I need to monitor how much he eats. Obviously he likes it and since he is the smallest of the three (all the same size when I got them last May), I assume he may need the extras. Any oto cat experts?