i bought a rena fish feeder, it was 75 bux and keeps the flakes fom drying out since it has a mild heater to keep things dry. It also has a lil door so that you can control how much is let out. You can also do several times a day if you want. in a 125 gal, i wouldnt worry about a huge ammo spike from food, just as long as you look at how much it doses out, 125 gal with a good stock should be able to buffer rather well
