Upgrade Your Filter Intake

Load image into Gallery viewer, Pre Filter Sponge - Aquarium Co - Op

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.

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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, you can use one of our specially designed intake modifications to upgrade filters like the Fluval FX series, Marineland hang-on-back series, or Fluval Tidal series.

Pre Filter Sponge (Mini)

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

Qty

Works great on my tidal 35 filter

Does everything Cory says it does. Attracts stuff in the tank for my fish and snails to pick at, protects the filter from some things getting in, protects smaller fish/snails/shrimp from getting sucked in, provides some intake separation from the glass, and so on. Been going strong for over a month without needing to clean it out, I just nudge it and vac a little when I do water changes. I have some doubts over whether meaningful amounts of bacteria actually live on it (would be cool to see that tested in a variety of setups), but that’s okay and not what I need from it. Have even seen my Medaka laying eggs inside the hole right above the top of the intake!

Really great product.

Pre filter sponge

I installed the large one with the fx6 canister with the adapter for aquarium co-op. It works and fits wonderful. Would recommend it to anyone. Thanks

Prefilter Sponge

Excellent product. I’ve been using them for a few years now. Really improve the effectiveness of my canister filters. Highly recommend this product.

Nice coarse sponge for filter inlet

Great experience every time!

Frequently Asked Questions

Shipping Policy

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

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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

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