Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours Β· Estimated delivery Jul 5 - Jul 10
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Think Crucial Replacement Aquarium Foam Block Filters - Compatible with Fluval FX4, FX5 & FX6Foam Block Filters fit Fluval FX4, FX5 & FX6. Filters are essential for a premium aquarium. Helps keep your tank free of dust, with frequent filter replacement. Prevents premature clogging and enhances biological filtration. Clean & Healthy Lifestyle: Replacing Fluval filters should help clean with premium filtration for healthier fish. The filter cartridge floss screens out dirt and debris. Simple & Easy to Install: Switch out in less than five (5)
- Foam Block Filters fit Fluval FX4, FX5 & FX6. Filters are essential for a premium aquarium. Helps keep your tank free of dust, with frequent filter replacement. Prevents premature clogging and enhances biological filtration.
- Clean & Healthy Lifestyle: Replacing Fluval filters should help clean with premium filtration for healthier fish. The filter cartridge floss screens out dirt and debris.
- Simple & Easy to Install: Switch out in less than five (5) minutes, providing time efficiency. Get back to daily activity quickly and make a big difference with filtration in the process. Simply remove the older and dirty filter and replace it.
- Long-lasting replacement filters. Replace the Fluval pad every 2 to 4 weeks for optimal performance or twelve (12) to twenty-four (24) times per year depending upon usage.
- THINK CRUCIAL manufactures premium quality filters and stands behind the quality and workmanship of all our products. We maintain a thorough quality control process to ensure compatibility with the models listed above.
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Fits the following Fluval models:
- FX4
- FX5
- FX6
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Based on 88 reviews
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5
Perfect size
Color: White, Size: 4 inch, Color: White, Size: 4 inch
These little shelves are perfect for my soap dispenser and lotion for my pedestal sink! The sink top was not large enough. Problem solved!
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Reviewed in the United States on April 29, 2026
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4
It will do what it needs to do
Color: Pink, Size: 5 inch, Color: Pink, Size: 5 inch
Very cute! Will do what it needs too. Not the best quality but for the price it's good
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Reviewed in the United States on May 9, 2026
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5
Works great for putting up figurines on the wall or any other small items you want to display
Color: Black, Size: 4 inch
Works great, sturdy, easy to put up.
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Reviewed in the United States on May 6, 2026
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5
Mini shelves
Color: Walnut, Size: 4 inch
Adorable item!, exactly what I was looking for. good quality
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Reviewed in the United States on April 10, 2026
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3
Much smaller than expected
Color: Black, Size: 4 inch, Color: Black, Size: 4 inch
I got these to hang collectibles, but they are really smallβlike smaller than I expected.
I almost returned them, but I needed something quick and didnβt have time. Iβll attach a picture so you can see the size.
They work, just be aware theyβre definitely on the smaller side.
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Reviewed in the United States on April 12, 2026