The Automatic Fish Feeder adopts moisture-proof design to protect your fish food. It is very suitable for aquariums, small fish tanks, to provide food for your pet fish, turtles or reptiles. It will also give you more time to enjoy your life and holidays without worrying about not having time to feed your pets. Housing: Plastic Fixing method: fixed clip or double-sided sticker Packing size: 168*120*90mm(Lx Hx W)) Installation method: There are two installation methods for the feeder according to the form of the tank. 1. Place the bracket on the edge of the water tank and tighten the plastic screws. 2. Separate the Velcro on both sides, tear off the sticker on the back, and stick it on the bottom of the water tank cover and the appropriate position of the feeder. notes: Do not twist the feeding box with your hands. Package Included: 1 x automatic aquarium fish feeder 1 x double-sided sticker 1 x User Manual Simple operation and installation, safe and convenient, mini shape, save space for your aquarium Selfish setting: By adjusting the slider, you can increase or decrease the amount of food distributed per revolution. Food style selection: :This item can only be used for dry food. Please place this item at a higher position above the water tank to prevent the food from getting wet. Then fix the water tank cover, leaving only one hole. Put some aquatic plants in the hole and let the food fall into the hole, and the fish will come over and eat the food.