Introduction
The Gardena Micro-Drip-System Fertilizer Dispenser (Model 8313) is designed for precise fertilization within your irrigation system. It ensures accurate dosing of liquid fertilizer concentrate, promoting healthy plant growth and efficient nutrient delivery directly to your plants.
Key features include a clear level indicator for exact dosing, a powerful valve for easy emptying and frost protection, and Gardena's Quick & Easy connection technology for flexible and secure integration into your Micro-Drip-System. This dispenser is compatible with both 4.6 mm (3/16") distribution pipes and 13 mm (1/2") laying pipes via an adapter, offering versatility for various garden setups.

Figure 1: Front view of the Gardena 8313 Fertilizer Dispenser.
Setup
Follow these steps to set up your Gardena 8313 Fertilizer Dispenser:
- Connect Components: Easily connect the dispenser into your Micro-Drip-System using the Quick & Easy connection technology. Ensure all connections are secure to prevent leaks.
- Adapter Connection: Attach the appropriate adapter to either the 4.6 mm (3/16") distribution pipe or the 13 mm (1/2") laying pipe, depending on your system.
- Initial Check: Before filling, ensure the valve is closed.
Important Note: Handle with care to avoid over-fertilization. Do not use the device in temperatures below freezing (0°C / 32°F) unless properly drained and protected.

Figure 2: Side view of the dispenser showing connection points.
Operating Instructions
To operate the fertilizer dispenser:
- Fill with Fertilizer: Unscrew the top cap and fill the dispenser with the desired liquid fertilizer concentrate. Do not overfill.
- Set Dosing: Use the integrated level indicator to set the exact dosing rate for your fertilizer concentrate. Refer to your fertilizer's instructions for recommended concentrations.
- Activate Flow: Open the valve to allow the fertilizer to mix with the irrigation water and distribute through your Micro-Drip-System.
- Monitor Level: Periodically check the level indicator to ensure sufficient fertilizer remains for your irrigation cycle.

Figure 3: Dispenser showing the 'SERVICE' and 'MIX' labels, indicating operational controls.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your fertilizer dispenser:
- Frost Protection: Before the first frost, completely empty the device by opening the valve to drain all water and fertilizer. This prevents damage from freezing.
- Cleaning: Regularly clean the dispenser to prevent residue buildup from fertilizer, which can affect dosing accuracy and flow. Use clean water to rinse the interior.
- Connection Check: Periodically inspect all Quick & Easy connections for secure fit and any signs of wear or leaks. Replace worn components as necessary.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Inaccurate fertilizer dosing | Incorrect level indicator setting; internal blockage; residue buildup | Verify level indicator setting. Clean the dispenser thoroughly to remove any blockages or residue. |
| Leaks at connections | Loose connections; damaged O-rings or seals | Ensure all Quick & Easy connections are properly seated and tightened. Inspect and replace any damaged O-rings or seals. |
| No fertilizer flow | Valve closed; empty dispenser; system blockage | Check if the valve is open. Refill the dispenser if empty. Inspect the irrigation system for any blockages. |
Specifications
- Model Number: 8313
- Brand: Gardena
- Product Type: Fertilizer Dispenser for Micro-Drip-System
- Compatible Pipe Sizes: 4.6 mm (3/16") distribution pipe, 13 mm (1/2") laying pipe
- Specific Uses: Soil conditioning, plant fertilization
- Global Trade Item Number (GTIN): 04078500831307
- Number of Units: 1.0 Count
- First Available: August 7, 2012

Figure 4: Dimensions of the Gardena 8313 Fertilizer Dispenser.
Warranty Information
For detailed warranty information, please refer to the warranty card included with your product or visit the official Gardena website. Keep your proof of purchase for any warranty claims.
Customer Support
Should you require further assistance or have questions regarding your Gardena 8313 Fertilizer Dispenser, please contact Gardena customer support. Contact details can typically be found on the Gardena website or in the product packaging.