Automatic Fish Feeder,Justmysport Fish Feeder Aquarium Tank Feeders with Timer Daily 6 Times Pet Feeding Dispenser on Schedule with Time Dials Manual Start Time for Everyday and Holiday AUTOMATIC FISH FEEDER feeding in 24 hours rhythms up to 6 times,it is designed with 6 time setting dials. So it can be programmed into 6 times of auto food feeding. It will be extremely useful when you traveling and can not feed the fish for the day. AQUARIUM FISH FEEDER'S CLAMP can be turned a couple of different ways to fit on your tank,depending on where you place it. There is also a adhesive base that you can use if the clamp does not work. Make sure the open hole into your tank is wide enough for the food to dump, it take a good 4-5 inch space because it turns and dumps at the same time. BATTERY OPERATED FISH FOOD FEEDER can clamp onto any tank,space-saving for your aquarium,make your room looks more comfortable and won't make a mess. Once the battery is installed you can set the time on the feeder. The green knob that the arrow is on is how you change the time. Always move it clockwise. EASY TO USE AND CLEAN,the simple structure guarantees that it is easy to handle, fill and clean. Safe and convenient automatic feeder is simple to install and operate. It is suitable for 5.28-132 Gallon fish tank, generally bigger granulated fish food would be better, the trough capacity of the fish feeder is 1.76 ounces. IDEAL FOR MOST TYPES OF FISH FOOD, suitable for flakes, pellets and detritus food, can be used to feed fresh or saltwater fish, turtles, newts and frogs, ideal fish feeder for terrariums and aquariums.