Swimline 8720
Swimline HYDROTOOLS Chemical Dispenser
Model: 8720
Manufactured by Swimline
1. Product Overview
The Swimline HYDROTOOLS 8720 Extra Large Capacity Pool & Spa Chemical Dispenser is designed to simplify the maintenance of your pool or spa. This floating dispenser efficiently distributes chlorine or bromine tablets, ensuring clean and sanitized water with minimal effort.
Key Features:
- Large 3 lb capacity, compatible with 1" or 3" chlorine/bromine tablets.
- Adjustable control ring for customizable chemical dispersion.
- Constructed from durable, UV-resistant plastic for long-lasting performance.
- Features a secure locking cap to keep chemicals safely contained.
- Easy to assemble and refill.

Image: The Swimline HYDROTOOLS 8720 Extra Large Capacity Pool & Spa Chemical Dispenser.
2. Setup Instructions
Follow these steps for initial setup of your chemical dispenser:
- Assembly: The dispenser requires minimal assembly. Ensure all parts are securely connected before use.
- Loading Tablets: Carefully open the locking cap. Load the dispenser with your preferred 1" or 3" chlorine or bromine tablets. The large capacity can hold up to 3 lbs of tablets.
- Secure the Cap: Close the locking cap securely to prevent accidental spills and ensure safe operation.
- Adjust Flow Rate: Locate the adjustable control ring at the bottom of the dispenser. Rotate the ring to set the desired flow rate for chemical dispersion. More open slots will result in a higher dispersion rate.
- Placement: Gently place the loaded and adjusted dispenser into your pool or spa. It is designed to float and evenly distribute chemicals.

Image: The purposeful design allows for holding 1" or 3" tablets and features a snap-lock top lid.

Image: Adjustable 4-setting flow ring for total control over chemical dispersion, showing low and high flow settings.
3. Operating the Dispenser
Once set up, the Swimline HYDROTOOLS dispenser operates continuously to maintain your pool or spa's chemical balance. The floating design ensures even distribution of sanitizers throughout the water.
Regular Monitoring:
Periodically check the water chemistry of your pool or spa using a test kit to ensure optimal sanitizer levels. Adjust the control ring on the dispenser as needed based on your water testing results and usage.
Refilling:
When the tablets are fully dissolved, or the dispenser is nearly empty, remove it from the water, open the locking cap, and refill with new tablets. Always ensure the cap is securely fastened before returning the dispenser to the water.
No official product operation videos from the seller are available at this time.
4. Maintenance
To ensure the longevity and efficient performance of your Swimline HYDROTOOLS chemical dispenser, follow these simple maintenance guidelines:
- Regular Cleaning: Periodically rinse the dispenser with fresh water to remove any chemical residue buildup. This helps prevent clogging of the dispersion holes and maintains optimal flow.
- Inspect for Damage: Before each refill, inspect the dispenser for any signs of cracks, damage, or wear, especially around the locking cap and adjustable ring. While constructed from UV-resistant plastic, prolonged exposure to harsh chemicals and sunlight can eventually cause material degradation.
- Proper Storage: During off-season or extended periods of non-use, clean the dispenser thoroughly, allow it to dry completely, and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Handle with Care: Always handle the dispenser carefully, especially when refilling, to avoid dropping it or causing structural damage that could lead to leaks or improper chemical release.

Image: The dispenser is designed with top-grade UV-resistant and non-corrosive materials for durability and even chemical distribution.
5. Troubleshooting
This section addresses common issues you might encounter with your chemical dispenser. If you experience problems not listed here, please contact customer support.
Common Issues & Solutions:
- Dispenser Not Floating Properly: Ensure the dispenser is not overfilled with tablets, which can affect buoyancy. Check for any water ingress into the floating chamber.
- Chemicals Not Dispensing: Verify that the adjustable control ring is set to an open position. Check for any blockages in the dispersion holes, which may require cleaning.
- Tablets Dissolving Too Quickly/Slowly: Adjust the control ring to regulate the flow rate. A more open setting will increase dissolution, while a more closed setting will slow it down. Consider pool size, water temperature, and usage frequency when adjusting.
- Dispenser Leaking: Ensure the locking cap is securely fastened and not cross-threaded. Inspect the dispenser body for any cracks or damage that might compromise its integrity.
6. Product Specifications
| Attribute | Detail |
|---|---|
| Brand | Swimline |
| Model Number | 8720 |
| Item Weight | 8 ounces (0.5 Pounds) |
| Product Dimensions | 8.66 x 7.6 x 8.78 inches |
| Item Form | Tablet |
| Capacity | Holds up to 3 lbs of 1" or 3" tablets |
| Material | UV-resistant plastic |
| UPC | 672875100200, 723815087201 |
| Country of Origin | China |

Image: Comparison table showing different Hydrotools chemical dispenser models and their tablet capacities.
7. Warranty and Support
Specific warranty details for the Swimline HYDROTOOLS 8720 Chemical Dispenser are not provided within this manual. Please refer to the product packaging or the manufacturer's official website for comprehensive warranty information.
For technical support, troubleshooting assistance, or inquiries regarding replacement parts, please contact Swimline customer service through their official channels. Contact information can typically be found on the product packaging or their website.
Always keep your purchase receipt as proof of purchase for warranty claims.
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