TetraEasyCrystal FilterPack C 100 Filter Cartridges with Active Carbon, Pack of 3

This is the only place I can get these filters. Great fit and value for money. Will definitely keep buying these

Goes in the filter ok and gives a satisfying fizzle when hitting the water for the first time (unless they are filled with sherbet)

Well I need these for my aquarium and can't get an alternative. Though to be honest they do the job, though if completely honest I'd rather they lasted a tiny bit longer, as sometimes when I have to clean it etc. they do rip and fall a part.With the above in mind they do a great job, but they don't last as long as other types of filter medium I've used with other tanks.

Have ordered many of these as I've needed them so easy to use 3 individually wrapped filter media cartridges just tale out the old an pop an new 1 in so much easier an no mess from spills or aquarium waste

I have a couple of aquariums and one of them has a filter which uses the Tetra C250/300 filter elements. These filter elements contain some activated carbon which helps keep the water clearer, all wrapped in two different filter media. The white side should face the water in flow and is designed to capture larger waste and the green side is on the water out flow and is there to capture the finer particles. Overall they do a very good job of filtering the water to remove waste particles and also to chemically filter the water (using the carbon) to give a cleaner healthier aquarium. Tetra recommend replacing these cartridges every 4 weeks but I have found they are effective in my aquarium for up to 6-8 weeks (I do monitor the chemical levels in between too in case the filters need replacing sooner).The description does say the filter can be replaced without getting your hands wet Not quite true as I do find some water flows over the top of the filter sometimes but it is certainly less messy than those filters were you have to wash out the filter media etc.The biggest downside to these filters though is you are replacing a lot of filter media in one go so the biological balance of the aquarium could be upset. This is one of the reasons I am so careful about checking the chemical levels, especially in the few days following media changes.Overall I would recommend these to anyone with C250 or C300 filters who does not need media without carbon (sometimes you need carbon free media when treating fish etc). The current Amazon pricing is also very competitive compared to the prices a 6 months ago when I last purchased it.

Fast delivery and great value for money - definitely recommend

These filters work wonders

They turned up in the time they said in good condition. Used in my fish tank filters.

Perfetto

Filtre pour petit bocal à poisson. À changer régulièrement. Très efficace.

Comprato e ricomprati… ci sarà un perché…

Buenos recambios

Sehr günstiger Preis, gute Qualität und auch positive Bewertungen. Gerne nochmal wieder.