Poret® Filter Cartridge


US and Canadian customers, see terms for shipping rates.
For all other countries, please,
Email me first to receive a shipping quote for your order.


Our foam filter cartridges are foam blocks with a vertical hole bored all the way through. They can be used as prefilters, replacement for ATI hydro sponges, to make cubefilters, with a powerhead as internal power filters, etc. Thus, these cartridges are very rugged and have a very long lifespan.

PPI = pores per inch

Foam cartridges

Poret® Cartridges: Length x width x height

4″ cartridge: 1.0 cm=0.4″ boring
$20.00 – 4x4x19.5″ Red 20 PPI
$20.00 – 4x4x19.5″ Black 25 PPI

4″ cartridge: 2.5 cm=1.0″ boring
$20.00 – 4x4x19.5″ Black 20 PPI
$20.00 – 4x4x19.5″ Black 25 PPI

5″ cartridge: 2.5 cm=1.0″ boring
$25.00 – 5x5x19.5″ Black 20 PPI
$25.00 – 5x5x19.5″ Black 25 PPI
$25.00 – 5x5x19.5″ Blue 30 PPI

6″ cartridge: 2.5 cm=1.0″ boring
$30.00 – 6x6x19.5″ Black 20 PPI
$30.00 – 6x6x19.5″ Blue 30 PPI
$30.00 – 6x6x19.5″ Black 30 PPI


Size/Color/PPI/boring



Last modified: January 15, 2018 at 8:27 am