Adjustable Automatic Feeder Food Timer with Display Screen for Fish Tank Aquarium Item type: Fish Tank Automatic Feeder Color: As picture Food capacity: about 30-80g Fixed clamp thickness: Approx. 3.2cm/1.3in Instructions How to set the synchronization time: 1. Press the SET button, the hour hand flashes, press the ADJUST button to adjust the clock. 2. Press the MODE button, the minute hand flashes, and press the ADJUST button to adjust the minute. 3. Press the SET button to store the standard time. Feeding time setting: 1. Press the MODE button and the LED will display 00:00. 2. Press the SET button to display the hour hand and press the ADJUST button to adjust the clock. 3. Press the MODE button to display the minute hand and press the ADJUST button to adjust the clock. 4. Press the MODE button, the Arabic numeral "1", flashing, press ADJUST once to indicate the feeding once, and the LED shows "!". 5. Press the SET button to save the settings. Note: Repeat steps 1-5 above to set the next feeding time and feeding times. If you do not need to set the next feeding time, you can press the MODE button 4 times to return to the standard time display state. In this case, the feeder will work by set require time, and up to 4 feeding times per day can be set. Two fixed ways: 1.Fixing clip bracket Adapt to a variety of aquariums for easy installation. Special attention: The thickness of the clip is about 3.2cm. Please pay attention to the glass thickness of your own fish tank. 2.Hook&loop If you use hook&loop to fix, attach the hook&loop to the feeder, one stick to the fish tank or a fixed place.