Free shipping on all U.S. orders · Delivery details at checkout
30-day free returns · Full refund on unused items




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We proudly offer free shipping on all orders across the United States. Every item in our store is delivered with no additional shipping cost.
When you place an order, estimated delivery times are provided based on product availability and your location. Shipping details will be shown at checkout so you know exactly when to expect your pet essentials.
Please note that delivery times may vary depending on your region and carrier availability. While all orders ship free, we work with trusted logistics partners to ensure reliable and timely delivery for pet owners across the U.S.
30-day free returns. Return unused items in their original condition and packaging within 30 days of delivery for a full refund.
Return shipping is free. Email petlywox@gmail.com with your order number and we send you a prepaid return label. Damaged, defective or incorrect items are also returned free of charge.
Once your return is received and inspected, your refund is issued to the original payment method within 10 business days. Opened consumables, used grooming or hygiene items, custom products, sale items and gift cards are not returnable unless they arrived damaged, defective or incorrect. See our Refund Policy.
Please note that deliveries to certain remote or outlying areas may experience slight delays during busy periods or due to weather conditions. These delays are temporary and may vary depending on the location and carrier operations. We appreciate your understanding and patience.
The xbbwmrs 12-Pack Large Aquarium Filter Cartridges are designed to fit Whisper internal and power filters, including models like 20i, 40i, IQ20, IQ30, IQ45, IQ60, PF20, PF30, PF40, and PF60. Each cartridge measures 6.22 inches by 4.72 inches, making them a practical choice for tanks in the 10–60 gallon range. This bundle aims to simplify routine maintenance while supporting clear water and a healthy tank ambiance.
4-in-1 filtration in a single cartridge
Design and installation that reduces setup hassle
Deodorizing and maintenance guidance for healthier water
Practical usage notes
These cartridges work well with a range of Whisper filters and are suitable for mid-sized home aquariums. If you have questions about fit or replacement timing, our team is ready to assist. While results can vary with tank conditions, many hobbyists report clearer water and more convenient maintenance when using a dedicated, compatible cartridge system like this one.
Q: Will these cartridges fit my Whisper power filter?
A: Yes—these cartridges fit Whisper internal and PF power filters (PF20/30/40/60 and IQ series). Check your model before use.
Q: How often should I replace the cartridges?
A: We recommend replacing every 2–4 weeks, depending on tank load and maintenance.
Full details: Shipping Policy · Refund Policy. Questions? Email petlywox@gmail.com.
Check the exact measurements and package contents before ordering. Read U.S. delivery details and return conditions. For a product question, email petlywox@gmail.com.
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