MarineLand Bio-Wheel Penguin Rite-Size E Aquarium Filter Cartridge, 4 Count, Penguin

Four Rite-Size E aquarium filter cartridges come in this pack, which is the format MarineLand uses so a replacement can be matched to the size letter on the filter. Each cartridge is pre-assembled and slides into the filter as one piece. The four pack covers a change every 2 to 4 weeks across a few months, and the cartridges are listed for MarineLand Emperor Bio-Wheel power filters.

Changing a cartridge every two to four weeks

MarineLand gives 2 to 4 weeks as the interval for best results, so a four-pack covers roughly two to four months at one cartridge per change. The pre-assembled cartridges slide easily into place, which keeps each change to a single part rather than a pad and a separate carbon pouch.

Rite-Size packaging labels the cartridge with its letter, so the buyer checks for E on the filter before opening a pack. The colour of the E size is purple.

Filtration through poly fiber and activated carbon

Mechanical filtering is handled by a pad of poly fiber that is double-thick, and water goes through this pad first. Behind it lies Black Diamond Premium Activated Carbon for chemical filtration, and the patented ribbed backing spreads that carbon evenly across the cartridge instead of letting it settle to one end.

The cartridge body is plastic, and the ribbed backing holds the carbon in place along the full width. Each unit weighs 404 g (14.3 oz) and measures 10.2 x 15.2 x 24.1 cm (4 x 6 x 9.5 in), so the E size is the largest format in this range. The unscented cartridge carries the model number PA0137-04.

Which filters does the Rite-Size E cartridge fit?

Which filter models take the Rite-Size E cartridge?

This cartridge is listed for MarineLand Emperor Bio-Wheel power filters. The letter E on the packaging refers to the cartridge size, not to a filter model number.

How do I know the E size is the right cartridge for my filter?

The E is the size letter on the Rite-Size packaging, so the filter or its existing cartridge carries the same letter. Matching E to E is the check that decides fit.

How many cartridges are in the pack?

The pack contains 4 cartridges, all in the E - Purple size.

How often should the cartridge be changed?

MarineLand recommends changing the cartridge every 2 to 4 weeks for best results.

What is inside the cartridge?

Each cartridge holds a pad of double-thick poly fiber and Black Diamond Premium Activated Carbon, held in a plastic body with a ribbed backing.

Is your filter marked with the letter E?

The cartridge only goes into a filter that takes the E size, so look at the filter or the cartridge already in it for that letter. A filter set up for a different Rite-Size letter is not served by this pack.

The dimensions of one cartridge are 10.2 x 15.2 x 24.1 cm, which the buyer can compare against the space the filter gives a cartridge before ordering. The interval MarineLand gives, 2 to 4 weeks, is the second thing to weigh, because the four cartridges last as many changes.

What customers say

Customers find the filter cartridge to be a great value, with one mentioning it works just as well as more expensive pet store options. The product effectively keeps tanks clean, requiring less gravel cleaning, and is easy to install and replace. Moreover, it lasts many months and fits well, with one customer noting it works specifically with Penguin PowerWheel Elite filters. However, the carbon content receives mixed feedback, with some customers noting it's packed with carbon while others report losing it all over the filter.