Originally Posted by battered
That's the difference with the tetra gel feeder. It only breaks down as the fish eats it. Also was exploring getting an automatic feeder like this Automatic Fish Feeder - Freshwater Food - Featured Products - PetSmart
that might feed like 1-2 pellets a day. Yes, water quality would change a little, but I don't think it would be drastic with nitrate absorbing plants + the reduced feeding.
I have a hard time believe that it will only degrade if it is digested. Everything degrades. Even food kept in the freezer can still go bad. And kept at the high temps where betta like is just asking for bacteria to eat it.
That automatic feeder looks a lot better than the one I used. Those small spaces will allow you to control just how much food he gets. Serving one a day every other day will give you enough meals to last him through your break. But you still have the problem of waste. If you go with this, you're going to need to do a test run: only feed him what he would get while you are on break, don't do any water changes, and test the water for ammonia on a daily basis. I think no matter what you chose, you should do a test run.
Originally Posted by Pogthefish
Once he realizes its food, its gone for and so is he
Good point. Fish can't control their eating like mammals can.