Product Overview
The ACMEROTA replacement filters are designed to provide clean and healthy drinking water for your pets using NPET WF160, WF040, and WF120 cat water fountains. Each filter features a multi-layer filtration system to effectively remove impurities and improve water quality.
Key Features:
- Compatibility: Specifically designed for NPET WF160, WF040, and WF120 cat water fountains.
- Multi-Layer Filtration: Composed of high-density cotton, coconut shell activated carbon, and ion-exchange resin.
- Enhanced Purification: Filters out hair, debris, heavy metals, chlorine, and odors.
- Softens Water: Ion-exchange resin helps reduce water hardness.
- Package Contents: 4 filter cartridges, 4 blue sponge filters, and 1 cleaning brush.
Filter Components and Function
Each filter is engineered with multiple layers to ensure comprehensive water purification:
- Filter Element Mesh: Blocks larger impurities like hair and debris.
- Large Diameter Coconut Shell Activated Carbon: Effectively removes residual chlorine, odors, and other harmful substances.
- Ion Exchange Resin: Softens tap water and filters out heavy metal ions.
- High-Density Porous Filter Cotton: Filters out small impurities, dirt, dust, and sand.

Image: Multi-layer filtration process. This diagram illustrates how the filter components work together to purify water, showing the progression from large particles to softened, clean water.
Setup and Installation
- Preparation: Before first use, thoroughly rinse the filter cartridge and the blue sponge filter under running water for at least one minute. This removes any loose activated carbon dust.
- Soaking: Immerse both the filter cartridge and the sponge filter in clean water for five minutes. This ensures optimal performance and prevents carbon dust from entering the fountain.
- Placement:
- Place the blue sponge filter into its designated slot in the fountain.
- Insert the filter cartridge into the fountain with the flat side facing upwards. Ensure it is securely seated.
- Assembly: Reassemble your NPET cat water fountain according to its specific instructions.
- Filling: Fill the fountain with fresh water.

Image: Rinsing the filter before use. It is crucial to rinse the filter gently for one minute to remove any loose particles.

Image: Filter installation steps. This image shows how to correctly place the blue sponge and the main filter cartridge into the water fountain.
Operating Instructions
Once the filters are installed and the fountain is filled with water, simply turn on your NPET cat water fountain. The filters will continuously purify the water as it circulates, providing fresh and clean drinking water for your pets.

Image: Visible water quality improvement. This image demonstrates the effectiveness of the filter in maintaining clean water compared to an unfiltered fountain.
Maintenance
Regular maintenance is essential to ensure the longevity of your fountain and the effectiveness of the filters.
- Water Change: It is recommended to change the water in the fountain and clean the fountain machine every two to three days.
- Filter Replacement:
- Replace the filter cartridge and sponge filter every one to two weeks during summer.
- Replace the filter cartridge and sponge filter every two to three weeks during winter.
- General recommendation is to replace filters every 2-4 weeks, depending on usage frequency and the number of pets.
- Cleaning Brush: Use the included cleaning brush to clean the pump and other parts of the fountain during water changes.
Troubleshooting
If you encounter issues with your water fountain's filtration, consider the following:
- Reduced Water Flow:
- Check if the filter cartridge or sponge filter is clogged with debris or hair. Clean or replace as necessary.
- Ensure the pump is clean and free of obstructions. Use the cleaning brush to clear any blockages.
- Unpleasant Odor/Taste:
- This indicates the activated carbon in the filter is saturated. Replace the filter cartridge immediately.
- Ensure regular water changes and fountain cleaning.
- Water Appears Cloudy:
- The filter may be past its effective life. Replace the filter cartridge.
- Ensure the filter was properly rinsed before installation to remove carbon dust.
Specifications
| Attribute | Detail |
|---|---|
| Product Name | ACMEROTA Replacement Filters for NPET Cat Water Fountain |
| Model Number | HD-AC-123-1 |
| Compatibility | NPET WF160, WF040, WF120 Cat Water Fountains |
| Filter Material | High-density cotton, Coconut shell activated carbon, Ion exchange resin |
| Filter Cartridge Diameter | 105 mm (4.13 inches) |
| Sponge Filter Diameter | 105 mm (4.13 inches) |
| Package Quantity | 4 Filter Cartridges, 4 Sponge Filters, 1 Cleaning Brush |
| Item Weight | 50 Grams (total for filters) |
| Country of Origin | China |

Image: Product dimensions. This image provides detailed measurements for both the sponge and main filter.
Returns Policy
For information regarding returns, please refer to the Amazon.it returns policy. If you wish to return a product within 30 days of receipt because you have changed your mind, please consult the Amazon help page. If you have received a defective or damaged product, please consult the Amazon help page. For specific information on purchases made on the Marketplace, please consult the Amazon help page.
Note: This is a general Amazon returns policy and not a specific product warranty.
Customer Support
For any questions or concerns regarding your ACMEROTA replacement filters, please contact the seller directly through your Amazon order history. For general inquiries about your NPET water fountain, please refer to the fountain's original instruction manual or contact NPET customer support.