Quick Summary
The Marina i25 Filter Replacement Cartridge, Medium is a replacement media cartridge for the Marina i25 filter. It is intended for buyers who need the correct cartridge for that filter model.
The cartridge is described as medium, so the most important check is that this is the right size and version for your filter. Replacement intervals can vary by use, so follow the stated guidance for your setup.
What to Compare Before Buying
- Compatibility: Check that your filter is the Marina i25 model.
- Size: This is the medium cartridge version, so confirm that medium is the version you need.
- Replacement cycle: The cartridge is stated to be replaced every 4 weeks, so compare that interval with how you plan to maintain the filter.
Before You Decide
Confirm the filter model and the medium cartridge size before choosing an offer. If your filter uses a different Marina cartridge version, this one will not be the right fit.











