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Pre Filter Sponge

Regular price: $4.99
Sale price: $4.99
Regular price
Unit price: per

Quantity:

Quantity must be 1 or more

Prevents small animals and debris from getting sucked up
Increases filter capacity
Uses coarse foam to extend time between cleaning

The pre-filter or intake sponge is a simple foam cylinder that is designed to slip over the intake tube of hang-on-back (HOB) and canister filters. The filter intake tube often has large openings, so use a pre filter sponge to prevent fish, shrimp, and sizable debris from getting sucked up and ruining the filter motor. Not only does an intake sponge clear up your water, but it also provides valuable surface area to grow beneficial bacteria.

Find out which sponge size to get and how to properly fit it to your hang-on-back or canister filter intake by viewing the Sizing Chart and Video below. (Click the "Show More" button to expand the Directions/Specifications section.)

1

Increased Filter Efficiency

Increase the capacity of your filtration. A pre filter sponge provides valuable surface area to grow beneficial bacteria, which purify waste chemicals in the water and make it safe for your fish to live in. It also adds mechanical filtration that keeps bulk debris from clogging your finer filter pads and extends the life and efficiency of your filter media.

2

Prevent Fish, Snails, and Food From Being Sucked Up

The filter intake tube often has large openings that allow sizable objects to get sucked up by the filter, potentially ruining the motor, so use a pre-filter sponge to help prevent baby fish, long-finned fish, dwarf shrimp, snails, plant leaves, fish food, and other debris from entering the filter.

3

Easy To Clean and Reusable

Put a ziploc bag around your pre filter sponge when you remove it from the aquarium. Squeeze it until the water turns brown. Dump the dirty water on your favorite houseplant. Then get another bag of water and repeat until clean. Afterwards, place it back on your filter's intake. This reusable, re-washable prefilter will last you many years.

4

Proper Fitment

In general, a larger pre-filter sponge is always better because it gives you more time between cleanings and increases your filtration capacity. Use a zip tie or O-ring on the filter intake tube when you need a snug friction fit to keep the sponge from falling off, as shown in the picture. A rubber o-ring can be found at hardware stores or Amazon.

small_4_panel_filter_intakes_update_fluval

5

Fits Most Filters

Most hang-on-back and canister filters can be fitted with a pre filter sponge. With some filters like the Fluval 409 series, it slides right over the intake and is a direct fit. With other filters like the Fluval FX series, you must remove the intake screen or basket and use an o-ring or zip tie. See the Sizing Chart in this page's Directions/Specifications section to pick the right pre-filter sponge for your filter.

Pre Filter Sponge (Mini)

Regular price: $4.99
Sale price: $4.99
Regular price
Unit price: per

Qty

Great Product

I use this on my AquaClear 30 HOB filter. I like that it adds another layer of filtration. It's give me peace of mind that none of my smaller fish are getting sucked into the filter.

Much happier with these than my previous brand!

I ordered one of these for my main tank. The other brand was just too fine. It clogged up way to easily and fast. These can go longer before having to clean them out. And even when it needs cleaning, it doesn't get all compressed and weird, threatening the flow of my filter.
I ordered two more. One for my quarantine tank and one as a back up. I highly recommend these!

Tropical Farmer's Thoughts

Hi, I run a tropical farm, raising fish and plants for the hobby, and founded my state's planted aquarium group. I have bought many pre-filter sponges, from various groups, and always come back to Aquarium Co-op, after disappointment with others. I was shocked to see a review saying they are too porous, and this motivated me to chime-in and say how this is a good thing, not a bad thing. They last so much longer than other brands, that are finer, clog, and then restrict and burn-up HOB filters, far too often. I've never had this happen with an Aquarium Co-op PFS. It just bothered me, deeply, seeing someone named Ray give a one star review and whine that they're too porous, when this is actually the beauty of the product, and why I keep coming back to you guys for these, when there are so many cheap ones with finer foam on the market. That guy doesn't know what he's talking about! Take it from a tropical farmer, you want this type! If you need proof, find the Arkansas Planted Aquarium Club and ask around or search cave.dweller.mediocrates on YouTube and IG

large prefilter sponge

I don't overfeed but food does get past fish and straight to the intake tube. Not to mention that noncompetitive species like corydoras are able to find snacks on the prefilter.

Med & Lg Sizes Are Best

I wish there was a size in-between the medium and large sizes, but overall I love that these sponges take forever to get clogged and don’t prevent intake flow. I use them on almost all my filters!

Frequently Asked Questions

Shipping Policy

We process and ship out 98%+ of our shipments next business day.

Live plants will ship using an appropriate service and typically arrive in 2 to 5 business days. Transit times do not include weekends, holidays, or weather delays. To avoid delays in the shipping network we recommend ordering live plants on Saturdays and Sundays for a Monday ship out.

Dry goods such as fish food, medication, filtration products, etc. can be ordered any day and will ship the next business day with an appropriate service. Typical shipping times are 1 to 7 business day transit time, depending on delivery location.

Faster shipping options available at checkout for an additional charge.

Alaska and Hawaii have a $17.99 surcharge. We do not ship to Puerto Rico currently.

90 Day Return Policy

90 Day Return Policy

At Aquarium Co-Op, our goal is to have satisfied customers. We make every effort to inform our customers about how our products work, and what is  to be expected. We recognize that sometimes a product may not completely  meet the expectations of a customer. We take pride in having a  no-hassle 90 day return policy. If you have purchased an item and are not  satisfied, we will take it back.

To start a return, email our customer service team at shipping@aquariumcoop.com. Please note that the shipping cost of returning an item is not covered by Aquarium Co-Op.

Items being returned may be sent to:
Aquarium Co-Op
Shipping Team
800 Enterprise Dr.
Lexington, KY 40510

Still Have Questions? Contact Us

Email: Shipping@aquariumcoop.com

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