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Peggy L Crowe
> 24 hourThis is just what my turtles filter needed to keep his aquarium cleaner for longer and safer for his health
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Meredith
> 24 hourUsed these for my Fluval water filter in my aquatic turtles tank. Exact replacement and works great. Shipping was timely.
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Joe F
> 24 hourIve used several different filter systems on my various aquariums. I love this underwater one the most. No constant running water. It keeps the tank clean and the filter elements last a long time.
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Vince Ryker
> 24 hourI have a Fluval U2 filter for a 10-gallon aquarium in which I keep a Red Ear Slider turtle. I change these out once every 3-4 weeks. It works surprisingly well, Red Ear Slider turtles are dirty. One box of these has enough in it to fill my filter twice.
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Craig Hamilton
> 24 hourBiological filtering is the way to go. One of the best aspects of the Underwater U series is that they approach water cleanliness through a comprehensive approach, including BioMax. These little white nuggets work like magic for the water of my turtle tank.
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Miss Orie Conn III
> 24 hourWorks great with the Fluval filter and helps keep the water the cleanest. The filter keeps things cleaner longer with this product.
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BBQ Corn Chips
> 24 hourThe Fluval U Undewater Filter BioMax works as expected with my Fluval U filters. This is the largest packaging of it that I have seen, so I always buy it here on Amazon because of the price versus getting it at the local fish store. I have Amazon Prime, so I get Free 2-day shipping and I dont have to pay for shipping on my orders which is very nice. If Fluval made these in a larger package volume, I would buy that. Make sure you only remove half your bio media when you clean or make changes in your filter so to make sure you maintain a decent established bacterial content in your tank to maintain a working cycle. Dont wash or clean under the tap, or the chlorinated water will kill off the good bacteria especially on the bio- media you are keeping in the filter. Rinse with tank water if necessary. I definitely recommend these for your Fluval U Underwater Filter. They are the BioMax media that you use with the filter. You can add other things as well into the cartridge chamber like carbon, zeo-carbon or ammonia removers if you need it. Fluval has them available for sale as well, and they are available on Amazon.
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MONGHANG DINH
> 24 hourDont need it
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Tessa
> 24 hourFits my model and works well.
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Raymo721
> 24 hourNeeded it