


Fluval FX UVC In-Line Clarifier 6W
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Fluval FX UVC In-Line Clarifier 6WThe FX UVC In Line Clarifier quickly and easily connects to all canister filters to eliminate suspended algae for a clean and clear aquarium. With unique CCFL technology, the FX UVC bulb runs cooler to last 2X longer than most traditional lamps. It attacks green and cloudy water by applying powerful, DNA destroying light emissions at a precise 253 nanometer wavelength. This natural process is chemical free and will not affect beneficial, surface
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- Fast: 2-3 business days
- Express: 1-2 business days
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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]
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4.1 ★★★★★
Based on 256 reviews
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Product Reviews
★★★★★ 5
Value for money
Size: Medium, Color: White 2-pack
Good quality, material is thick and soft. Runs a bit small so I would rather size up next time.
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Reviewed in the United States on June 9, 2025
★★★★★ 5
Favorite White Tee
Size: Medium, Color: White 4-pack
Love these simple white tees. They don't shrink and are adequately sized. They wash well. My 6 year old loves them too. Light and comfortable. They can be dressed with jeans, shorts, work as an undershirt or pajama shirt. Favorite white tees for any outfit. Excellent priced. Great shirts overall.
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Reviewed in the United States on June 6, 2025
★★★★★ 5
Worth it
Size: Small, Color: White 2-pack
Nice white material true to size and will order again
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Great for pajama shirts
Size: Large, Color: White 4-pack
Shirts are true to size. The material is soft and not too thin. We used these as pajama shirts for my preteen and he got a lot of use out of them.
Pro - cheap and well made
Con - they did shrink slightly after a few washes so the shirt is shorter. Didn’t impact our use though
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Reviewed in the United States on April 20, 2026
★★★★★ 3
Pay attention to the size chart
Size: Large, Color: White 2-pack, Size: Large, Color: White 2-pack
Good price for 2 undershirts. Retail price on the item packaging says $16.95. The shirts are thin and semi see-through but these are meant to be layered under another top. Have not washed yet but there's a good chance they will shrink a bit.
Had to return the first time because of inaccurate/unhelpful size chart. For reference, see the actual size chart on the product packaging (I attached to this review). Originally purchased a Medium for a 10yo average build child, it was too short. Large is the correct size.
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Reviewed in the United States on January 30, 2025