Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239
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john
03-06-2025I love this Bio-Foam. Its great I have it on auto delivery for every two months. I use mainly for a reminder to clean the filters.
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Joseph
> 3 dayBuy off brand. I read reviews for others saying they were a tight fit and smaller holes. I bought these and they fit tight in FX4. They will do fine since they are made for the Fluval but next purchase will be another brand so I can save money.
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Tati
> 3 dayAwesome filter!
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B.Wiley
> 3 dayProduct is keeping my tank clean and water crystal clear. Make sure you buy enough that way you can switch them out once a month.
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Ms. Lavonne Buckridge
> 3 dayThe best polishing pads out there!
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Ziggnick
Greater than one weekWorks great I have two red eared sliders and a few fish in a 120 gallon tank, I use 2 of these filters in the top basket for getting the big stufd before moving onto my bio rings... My turtles are very messy eaters missing half the food they eat I swear and with this high output of a canister these keep right up with it, I use two of these in the top tray with carbon sock under them then middle tray is loaded with almost 3 boxes of bio rings, and bottom tray with 1 1/2 boxes of bio rings on top with 2 white pads (filter floss) on the bottom mainly to catch particles off of the biorings which put off ceramic sand for the first 2 months or so, I use the white ones now to keep my water crystal clear....love the pump.and.these blue pads! Ps... There is another seller on here who I have found that sells these in a generic for almost half the price same size thickness and structure just half price and without fancy boxing highly sugjest saving the few bucks ;-) have a good one
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Randall Crane
> 3 dayLike all of the Fluval filters I have bought the work awesome and take the pain out of cleaning the filters and tank regularly
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mark liguori
> 3 dayIf you are thinking about replacing your original foam blocks this is the product you want.i just cant believe what a difference they made.my water is ten times clearer
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Sean
> 3 dayExact same as u would buy in the pet store just alot alot cheaper will be buying more.
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Lauren
03-06-2025I use the Fluval FX5 filter for a 125 gallon RES turtle tank. For anyone out there that knows anything about turtles the are messy! With that said since I switched to the FX5 my tank has never been so clean and I dont have to clean the filter nearly as often as any other filter I have used on this tank in the past 4-5 years.
