Tetra Prefilter FK3 Replacement Cylinder Foam Media Filter

By Tetra
Rated 4.9091 out of 5 stars
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$5.99Chewy Price
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$8.19Chewy Price
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Frequently Bought Together

This Item - Tetra Prefilter FK3 Replacement Cylinder Foam Media Filter
Rated 4.9091 out of 5 stars
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Buy 1 Get 1 50% Off

Total Price: $0.00

About This Item

  • Helps keep filter working efficiently
  • Keeps water clean and clear
  • Replacement for current filtration
  • For use in ponds and water gardens
  • Change regularly for optimum results
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Learn More About Tetra From Our Team of Experts

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Customer Rating
Rated 4.9091 out of 5 stars
11
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Rated 4.7632 out of 5 stars
38
Rated 5 out of 5 stars
1
Rated 5 out of 5 stars
1
Price
$5.99Chewy Price
$10.98Chewy Price
$5.99Chewy Price
$8.94Chewy Price
$8.34Chewy Price
Autoship
$5.69Chewy Price
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$5.69Chewy Price
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Fish TypeKoi & Pond FishKoi & Pond FishTropical FreshwaterTropical FreshwaterN/A, Tropical Freshwater
Aquarium TypePondPondFreshwaterFreshwaterFreshwater
MaterialFoamN/AN/AN/AN/A

Questions & Answers

4 Customer Questions

How big is the hole in this filter? Also does the hole go all the way through or is the opposite end closed in?
Answer by Chewy • Nov 19, 2017
The hole in this filter is approximately 1 inch and does go all the way through to the opposite end.
is this for a KOI BACKYARD pond? i have a filter on this currently and it looks similar but I can't tell how big this one is...
Answer by Chewy • Oct 11, 2017
It measures 5 3/4 inches in length and 4 inches in diameter and is idea for ponds and water gardens.
Can this just be cleaned as reused?
Answer by Chewy • Aug 31, 2018
It is recommended to change this filter regularly for optimum results. Reusing filters is not recommended as it can slow down filtration.
Will this work on an aquaclear 110 intake tube?
Answer by Chewy • Sep 04, 2019
This replacement foam measures 6" length by 4" diameter with a 1" diameter hole in center and is for sue with the Tetra Water Garden Pump Pre-Filter.

ReviewsWrite a Review

4.9
Rated 4.9091 out of 5 stars
11 Reviews
100%
Would recommend to a friend
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9.0909
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90.9091
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11 Customer Reviews

Rated 5 out of 5 stars
By Pondowner on Apr 28, 2022

Works great!

These are coarse, hard sponges with large holes. They work great for ponds. Chewy sells them at a great price and I don't know where to get them anywhere else. Highly recommend!

Rated 5 out of 5 stars
By HP2026 on Dec 10, 2021

Multiple uses for your Aquarium

This can be used as a sponge prefilter for you HOB or it can be used as a replacement sponge for your air driven sponge filter. Because it has about a 20 PPI porosity, it won't clog quickly like most sponge filter. I use it for both instances and it is fantastic and very inexpensive when you buy it from Chewy.

Rated 5 out of 5 stars
By FishyBusiness on Jul 31, 2021

Tetra prefilter for mag drive pump

These filters work great...The whole goes all the way through unlike the one that comes with the pump.The inlet part that holds it on is caped at the end ,so nothing will get into the pump even though the hole goes all the way through the filter....I recommend these filters..they work well,and are very affordable.

Rated 5 out of 5 stars
By Filters on Jul 10, 2020

Tetra Prefilter FK3 Replacement Cylinder Foam Media Filter

Filters are wider than thought but, works great pond is nice and clear and fish are happy.

Rated 5 out of 5 stars
By Pickycat on Oct 25, 2019

Great product that fits on most pumps!

Great product! I’m currently using on 2 different pumps and only need to change them out every 4 days for a turtle pond! Definitely recommend this product. Very happy customer.

Rated 4 out of 5 stars
By Gram on May 24, 2019

Very good product

The product I ordered was not the size I needed but it is a very good product I had to cut it down to make it work

Rated 5 out of 5 stars
By katt on Jun 1, 2018

love it.. works great

better than i had thought it would. versatile..flexible, shape able. working great in the space i had. was bigger than i thought it would be..which was a wonderful surprise.

Rated 5 out of 5 stars
By RAYMOND on Jun 3, 2018

FK3 REPLACEMENT FILTER

GOOD PRODUCT ,BUT A LITTLE CORSE FOR FISH TANKS .GOOD FOR FISH POND.

Rated 5 out of 5 stars
By choforoGT on Jul 3, 2017

Really Good

Bigger then what's i was expecting but work's good. Really helps my 2 75 filters and the fishes not getting stock in the filters tube

Rated 5 out of 5 stars
By Scooter on Jun 20, 2017

New Filter

After searching and searching, not able to locate the exact filter which was on a pump I came across this one. It works "better" than the original smaller one and the size of this replacement works much nicer. I reordered to have an extra..... It arrived quickly, and I'm very impressed with the company of how they called to make sure this was correct (being the very next day when I reordered)...... I will look at Chewy first, before seeking elsewhere..........