DaToo DT-638
DaToo Automatic Fish Feeder DT-638 Instruction Manual
Model: DT-638 | Brand: DaToo
1. Product Overview
The DaToo Automatic Fish Feeder DT-638 is designed to simplify fish feeding for aquarium owners, especially during busy periods or vacations. It features intelligent feeding modes, allowing for precise control over feeding frequency and amount. The innovative airflow moisture-proof function ensures that fish food remains dry and fresh, preventing caking and spoilage. With multiple installation options, this feeder is versatile and easy to integrate into various aquarium setups.

Image of the DaToo Automatic Fish Feeder DT-638, showing its compact design and how it dispenses food into an aquarium.
2. Package Contents
Upon opening your DaToo Automatic Fish Feeder package, please verify that all the following items are included:
- 1x DaToo Automatic Fish Feeder (DT-638)
- 1x Adjustable Clamp Base
- 1x Sticker Base
- 2x AA Batteries
- 1x Instruction Manual

Contents of the DaToo Automatic Fish Feeder package, including the feeder unit, adjustable clamp base, sticker base, AA batteries, and instruction manual.
3. Specifications
| Feature | Detail |
|---|---|
| Model | DT-638 |
| Item Weight | 8.4 ounces |
| Item Dimensions (LxWxH) | 4.4 x 2.3 x 3.7 inches |
| Batteries | 2 AA batteries (included) |
| Material | Plastic |
| Color | Black |
| Target Species | Fish |
| Recommended Uses | Aquarium |
| Special Feature | Moisture-control system to keep food fresh |

Diagram illustrating the dimensions of the DaToo Automatic Fish Feeder DT-638, including its length, width, height, and the dimensions of the clamp base.
4. Setup & Installation
The DaToo Automatic Fish Feeder offers three convenient mounting options to suit various aquarium designs. Choose the method that best fits your tank:
- Method 1: Adjustable Clamp Base (Horizontal)
Attach the feeder to the wall of your tank using the adjustable clamp base in a horizontal orientation. Ensure the clamp is securely fastened to the tank rim. - Method 2: Adjustable Clamp Base (Vertical)
For semi-open aquariums, the adjustable clamp base can be used to clip the feeder to the lid in a vertical orientation. This provides stable support and proper food dispensing. - Method 3: Sticker Base
Utilize the provided sticker base to adhere the feeder directly to your tank's feeding port or a flat surface near it. Ensure the surface is clean and dry before applying the sticker for optimal adhesion.

Visual guide showing three installation methods for the DaToo Automatic Fish Feeder: horizontal clamp, vertical clamp, and sticker base for various aquarium types.
5. Operating Instructions
5.1 Intelligent Feeding Modes
The DaToo Automatic Fish Feeder offers flexible feeding schedules to meet your fish's specific needs:
- Mode 1: Feed Once Every 24 Hours
The feeder will dispense food one time within a 24-hour cycle. - Mode 2: Feed Twice Every 24 Hours
The feeder will dispense food two times within a 24-hour cycle. - Manual Feeding Mode
Press the manual button on the feeder to dispense food instantly at any time, allowing for additional feeding or observation.

Image demonstrating the intelligent feeding modes of the DaToo Automatic Fish Feeder, highlighting options for feeding once or twice every 24 hours, and a manual feeding button.
5.2 Precise Customized Feeding Amount
Adjust the amount of food dispensed to match your aquarium size and the number of fish. The feeder provides 8 levels of feeding amount options:
- Simply slide the toggle on the feeder to select the desired feeding level.
- Start with a lower setting and observe your fish's consumption to determine the optimal amount, preventing overfeeding and maintaining water quality.

Diagram showing the 8 levels of feeding amount options available on the DaToo Automatic Fish Feeder, allowing users to customize the food quantity dispensed.
6. Maintenance
6.1 Airflow Moisture-Proof Function
The feeder is equipped with an air hole designed to prevent moisture buildup in the food chamber:
- Connect an air hose and air pump (not included) to this air hole to deliver a constant flow of fresh, dry air.
- This feature helps avoid food from getting damp, caked, or spoiled, ensuring your fish always receive healthy and safe food.
- The hidden feeding port further protects the food from water droplets, dust, and dirt.

Close-up view of the DaToo Automatic Fish Feeder highlighting the moisture-proof air hole for connecting an air pump and the hidden feeding port to protect food.
6.2 Cleaning Instructions
To ensure the longevity and proper functioning of your feeder, follow these cleaning guidelines:
- The feeder unit should be cleaned by hand wash only.
- Do not submerge the electronic components in water.
- Regularly check the food chamber and dispensing mechanism for any residue or blockages and clean as needed.
7. Troubleshooting
If you encounter any issues with your DaToo Automatic Fish Feeder, please review the following common scenarios:
- Feeder Not Dispensing Food: Check if the food chamber is empty or if the food is caked. Ensure batteries are correctly installed and have sufficient charge.
- Incorrect Feeding Amount: Verify the feeding amount setting on the toggle. Adjust as necessary.
- Food Getting Damp: Ensure the moisture-proof air hole is clear and consider connecting an air pump if humidity is high.
For persistent issues or problems not listed here, please contact customer support.
8. Warranty & Support
DaToo stands behind the quality of its products. Your Automatic Fish Feeder DT-638 comes with a one-year warranty from the date of purchase.
We are committed to providing excellent customer service. If you have any questions, concerns, or require assistance with your product, please do not hesitate to contact our professional customer service team, available 24 hours a day. Your satisfaction is our priority.
Please refer to the contact information provided in your purchase documentation or on the official DaToo website for support.
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