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Pre-filter sponge from Shenzhen Dongtai Sponge, showing a close-up of the porous foam filter used in aquatic or air filtration systems.
Pre Filter Sponge from Shenzhen Dongtai Sponge, showing a close-up of the porous foam filter used in water or air filtration systems.
Pre-filter sponge from Shenzhen Dongtai Sponge, a durable filter sponge used for aquarium or water filtration systems.
Pre Filter Sponge from Shenzhen Dongtai Sponge, showing a close-up of the foam filter used in water or air filtration systems.
Pre-filter sponge from Shenzhen Dongtai Sponge, shown in a close-up image, used for filtration systems in aquariums or appliances.
Pre-filter sponge from Shenzhen Dongtai Sponge, showing a close-up of the porous foam filter used in aquatic or air filtration systems.
Pre Filter Sponge from Shenzhen Dongtai Sponge, showing a close-up of the porous foam filter used in water or air filtration systems.
Pre-filter sponge from Shenzhen Dongtai Sponge, a durable filter sponge used for aquarium or water filtration systems.
Pre Filter Sponge from Shenzhen Dongtai Sponge, showing a close-up of the foam filter used in water or air filtration systems.
Pre-filter sponge from Shenzhen Dongtai Sponge, shown in a close-up image, used for filtration systems in aquariums or appliances.

Pre Filter Sponge

$ 6.99 - $ 9.99
$ 9.99
$ 6.99 - $ 9.99
$ 9.99
Size: Large

 A Pre Filter Sponge is the perfect tool to keep shrimp, small fish, and babies safe from being sucked up into the filter. The sponge should be placed over the intake tube, making sure that the fit is snug and secure. Acting as a mechanical filter, the sponge will trap larger particles, while allowing water and smaller particles to pass into the filter. Regular cleaning of the Pre Filter Sponge is recommended to prevent any blockage of water flow. Use tank water when cleaning the Pre Filter Sponge to avoid killing beneficial bacterial that may have colonized the sponge. 

 Size Sponge Diameter Intake Hole Length 
Small 1.5 inches 0.5 inches 2.75 inches
Medium 2.5 inches 0.5 inches 3 inches
Large 3.5 inches 1.25 inches 5.5 inches

Overall rating: 5.0 / 5 from 13 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["size","fit","filter"].

Review highlights

Reviews

Google finally got me to the right place!

"I have been looking for these for a long time but everything I found was too small. I am so excited that Google finally got me to your site. Now I can stop using nylon socks to bag my intake. My littles thank you so very much!"

— Shawn M. (5/5)

Very happy

"I purchased the large Pre Filter Sponge worried it might not fit my filters bulky intake pipe but it did. Also very happy with the fast free shipping on this item!!"

— Lena C. (5/5)

Works well for my larger

"Works well for my larger intake filter."

— Ken T. (5/5)

Worked great

"What I needed"

— Tyler N. (5/5)

Perfect fit

"Fits perfectly. I bought this to keep fry and shrimp form getting drawn into my filter."

— James S. (5/5)

Had the size prefilters I needed!

"I have shrimp hiding in the thick growth of Anubis in the center of my 55-gallon tank and I am always finding them in the 2 filters when I clean them. I was trying to find prefilters to fit on larger filters at local pet shops with no luck. So happy I found them on your web site!!"

— Karen H. (5/5)

Perfect!!

"I have been looking for replacement sponges for my all glass aquarium overflow filter for quite some time. The originals are well over 20 years old. Could not find the correct size until I stumbled onto this page. These are exactly the same size id and od as the originals. Slid right onto the filter stalk. Thanks!"

— elan o. (5/5)

Thanks for the hard-to-find sponge

"Thanks for the hard-to-find sponge filters"

— Bard Z. (5/5)

"Good fit for the intake on my Oase Filtosmart"

— Thomas (5/5)

Works as it should

"Medium fits over my Oase 350. It's a bit tight but does the job."

— Travis L. (5/5)

Q&A

what size sponge fits a 16/22mm glass lily pipe intake?
Hello, thank you for your question. Depending on your pipe intake diameter, will be the corresponding pre filter sponge. Typically, the Medium will fit most lily pipes!