Fresh, Flowing Water.
Happier Pets.
Make everyday hydration more appealing with a 4L / 135 oz stainless steel fountain designed for cats and dogs.
Fresh, Flowing Water.
Happier Pets.
Make everyday hydration more appealing with a 4L / 135 oz stainless steel fountain designed for cats and dogs.
GULUNOOK Aqua Flow 4L Stainless Steel Pet Water Fountain
Fresh, flowing water for cats and dogs, with 4L capacity, 3 flow options, and multi-stage filtration.
🐾 Made for Cats & Dogs
A versatile fountain for multi-pet homes
💧 Fresh, Flowing Water
Encourages a more engaging drinking experience
🧼 Stainless Steel Design
Durable, easy to clean, and made for everyday use
🔇 Quiet & Low Maintenance
Below 30 dB with easy filter replacement
Product Details
• Capacity: 4L / 135 oz
• Material: SUS304 stainless steel drinking surface
• Suitable for: Cats & dogs
• Power: USB-powered
• Pump: Ultra-quiet, below 30 dB
• Flow Options: 3 interchangeable water flow styles
• Filtration: Triple filtration system
• Water-Level Protection: Automatic pump shut-off when water is too low
• LED Indicator: Blue for normal operation, red for low water
Filtration & Filter Care
Triple Filtration for Cleaner Water
The triple filtration system helps keep your pet's drinking water cleaner by using three filtration layers:
- Resin: Helps reduce certain impurities from the water.
- Activated Carbon: Helps reduce odors and improve water freshness.
- Sponge: Helps catch hair, debris, and larger particles.
Filter Care
For best performance, rinse the sponge regularly and replace the filter as recommended based on your pet's usage and water quality.
Includes 4 Replacement Filters + 4 Sponges
Four replacement filters and four replacement sponges are included, so you can keep your fountain running with less hassle.
Cleaning & Pump Care
Easy to Clean
The fountain is designed to be easy to take apart and clean. Regular cleaning helps maintain fresh water and consistent water flow.
- Unplug the fountain before cleaning.
- Remove the drinking tray and pump as needed.
- Rinse and clean the fountain regularly.
- Clean the pump regularly to help prevent buildup.
- Rinse the sponge between filter replacements.
Important Pump Care Tip
Always unplug the fountain before adding water or changing the filter.
If the pump is briefly exposed to air during these routine steps, it may temporarily stop flowing. This is normal for a submersible pump and does not mean the pump is damaged.
To restore normal water flow:
1. Unplug the USB power cable.
2. Make sure the pump is fully submerged in water.
3. Plug the USB cable back in.
4. If needed, repeat the process a few times to release trapped air.
Tip: Do not run the pump dry.
3 Flow Options
3 Flow Options
Choose the Flow Your Pet Prefers
Every pet has different drinking preferences. Aqua Flow includes three interchangeable water flow options:
Stainless Steel Faucet
A smooth, steady stream for pets who enjoy drinking from a faucet.
Cat-Head Outlet
A gentler, lower-flow option for pets who prefer a softer stream.
Gentle Fountain Flow
A soft flowing fountain style that keeps water moving and inviting.
Simply switch the outlet to find the flow your pet likes best.
What's Included
Everything You Need to Get Started
- 1 × 4L / 135 oz Stainless Steel Pet Water Fountain
- 1 × USB Water Pump
- 4 × Filter Cartridges
- 4 × Pre-Filter Sponges
- 4 × Pump Sponges
- 1 × Stainless Steel Faucet Outlet
- 1 × Cat-Head Outlet
- 1 × USB Power Adapter
- 1 × Connecting Tube
- 1 × Silicone Mat
- 1 × User Manual
Three Ways to Enjoy Flowing Water: Use the faucet outlet, cat-head outlet, or no outlet for a gentle upward fountain flow.
Ready to Use: Wash, assemble, add water, and plug it in.
Shipping & Returns
Fast, Reliable U.S. Shipping
- Free U.S. Shipping on all orders.
- Orders ship from our U.S. warehouse.
- Tracking information will be provided after your order ships.
- Delivery times may vary depending on your location.
30-Day Returns
- We offer a 30-day return policy for eligible purchases.
- If you're not satisfied with your purchase, please contact us within 30 days.
- Items must be returned in accordance with our return policy.
Product Support
- Received a damaged, defective, or incomplete product? Please contact us and we'll be happy to help.
- If you have any questions about setup, cleaning, filters, or product use, our support team is here to assist you.
Frequently asked questions
1.About the Fountain
Q:Is this water fountain suitable for both cats and dogs?
A:Yes. The GULUNOOK 4L fountain is designed for both cats and dogs, making it a convenient choice for single-pet and multi-pet homes. The 4L / 135 oz capacity provides plenty of water for everyday use.
Q: How much water does the fountain hold?
A: The fountain holds up to 4L / 135 oz of water. Actual refill frequency depends on your pet's size, drinking habits, number of pets, and the surrounding environment.
Q: What is the fountain made of?
A: The drinking area is made with SUS304 stainless steel, paired with durable PC components. The stainless steel drinking surface is designed for everyday pet use and is easy to wipe and clean.
Q: Is the fountain noisy?
A: The USB-powered pump operates at less than 30 dB under normal conditions. Keeping the water level above the pump and cleaning the pump regularly can also help maintain smooth, quiet operation.
Q: Does the water flow continuously?
A: Yes. Once connected to power and properly filled with water, the fountain continuously circulates water. Simply disconnect the USB power when you want to turn it off.
2. Water Flow & Pet Use
Q: What are the 3 water flow options?
A: The fountain offers three flow styles: the stainless steel faucet, the cat-head outlet, and the top bubbling flow without an attachment. You can try different options to find the flow your pet prefers.
Q: What if my pet is afraid of the fountain or doesn't drink from it right away?
A: This can happen when a pet is introduced to a new fountain. Place the fountain near your pet's usual water bowl and allow them to explore it at their own pace. You can also start with the gentlest or most familiar-looking flow option. Avoid forcing your pet to use it.
Q: Can I use the fountain for multiple pets?
A: Yes. The 4L capacity makes it suitable for homes with multiple cats and/or dogs. For multi-pet households, check the water level more frequently and clean the fountain as needed based on usage.
3. Filters & Water
Q: Does the fountain come with filters?
A: Yes. Your fountain includes 4 replacement filter cartridges, 4 pre-filter sponges, and 4 pump sponges, giving you a starter supply for ongoing maintenance.
Q: What do the filters do?
A: The multi-stage filtration system helps reduce pet hair, debris, and unwanted odors from circulating water. The pre-filter and pump sponge also help capture larger particles before they reach the pump.
Q: How often should I replace the filters?
A: Filter life depends on water quality, number of pets, and how frequently the fountain is used. As a general guideline, replace the filter about every 3–4 weeks and replace it sooner if it becomes visibly dirty, discolored, or saturated with debris.
Q: Do I need to replace the filter if I use filtered or bottled water?
A: Yes. The fountain's filters are still useful for helping capture pet hair, debris, and other particles introduced during everyday use. Filtered or bottled water does not replace routine fountain maintenance.
Q: How should I prepare a new filter before using it?
A: Rinse the filter and pre-filter sponge with clean water before installation. Follow the filter instructions and make sure the filter is properly seated before starting the fountain.
4. Cleaning & Maintenance
Q: How often should I clean the fountain?
A: For best everyday maintenance, check the water and drinking area regularly and clean the fountain at least every 1–2 weeks. Homes with multiple pets or heavy shedding may need more frequent cleaning.
Q: How do I clean the fountain?
A: Unplug the fountain first. Empty the water, remove the filter and removable components, then clean the washable parts with water and mild dish soap. Clean the pump and pump opening to remove hair or debris, then rinse everything thoroughly and reassemble before refilling.
Q: Can I put the fountain in the dishwasher?
A: We recommend hand washing the fountain and its components unless a specific part is clearly identified as dishwasher safe in the product instructions. Do not place the USB pump, power adapter, or electrical components in a dishwasher.
5. Pump Troubleshooting
Q: Why did the pump stop flowing after I refilled the fountain or changed the filter?
A: If the pump is briefly exposed to air during refilling or filter replacement, it may temporarily lose its water flow. This is normal for a submersible pump and does not mean the pump is damaged.
Unplug the USB power, make sure the pump is fully submerged, then reconnect it. If needed, repeat the unplug/reconnect process 3–5 times and gently shake the pump while fully submerged to help release trapped air.
Q: What should I do if there is still no water flow?
A: First, make sure the water level is sufficient and the pump is completely submerged. Then unplug the USB power and check the pump, tubing, filter, and water outlet for hair or debris. Clean the pump if necessary and reconnect the power.
If the pump still does not work after these steps, please contact our support team at support@gulunookpet.com and we'll help you troubleshoot it.
Q: What should I do if the water flow becomes weaker?
A: A weaker flow is usually a sign that the pump, filter, or water path needs attention. Check the water level, clean the pump and pump sponge, make sure the filter is correctly installed, and remove any hair or debris from the water outlet.
Q: What happens if the water runs too low?
A: Do not allow the pump to operate without enough water. Keep the water level sufficient to fully submerge the pump and check the water level regularly. The fountain includes dry-run protection to help protect the pump when water becomes too low.
6. Power & Everyday Use
Q: Does the fountain need to stay plugged in?
A: Yes. The GULUNOOK 4L fountain uses a USB-powered pump and is designed for continuous operation while connected to power.
Q: Can I leave the fountain running overnight?
A: Yes. The fountain is designed for continuous circulation while powered and properly filled with water. For safe operation, keep the pump submerged and check the water level regularly.
Q: What type of water should I use?
A: You can use normal drinking water suitable for your pets. If your household has hard water, filtered water may help reduce mineral buildup inside the fountain and pump.
7. Orders, Shipping & Support
Q: How quickly will my order arrive?
A: Orders shipped within the U.S. typically arrive within 3–5 days after shipment. Delivery times may vary depending on your location and carrier conditions.
Q: Do you offer free U.S. shipping?
A: Yes. We currently offer free shipping on orders within the United States.
Q: What if I have a problem with my fountain?
A: We're here to help. If you have questions about setup, water flow, filters, cleaning, replacement parts, or your order, contact us at support@gulunookpet.com. Our support team aims to review and respond to all customer inquiries within 24 hours.
Q: What is your return policy?
A: We offer a 30-day return period. If you have an issue with your order or product, please contact our support team first at support@gulunookpet.com so we can help.
Keep Your Fountain Fresh
Stock up on replacement filters for your GULUNOOK 4L Pet Water Fountain.
GULUNOOK Aqua Flow 4L Fountain Replacement Filters (8-Pack)
GULUNOOK Aqua Flow 4L Fountain Replacement Filters (8-Pack)