Full Overview

Our filter cartridges meet the absolute highest standards of water purification performance and operational ease. Each pre-assembled cartridge slides easily into place, providing superior mechanical and chemical filtration and making replacement fast, dry, and effortless. The cartridge mechanically filters water through a pad of couble thick poly-fiber. Debris and waste particles are trapped, and water is chemically filtered through Marineland's Black Diamond Premium Activated Carbon. Inside the cartridge, a patented ribbed backing ensures the even distribution of activated carbon to deliver maximum water-to-carbon contact, resulting in crystal clear, crystal clean water.

Technical Details

- There's a Rite-Size cartridge for every Penguin, Emperor, and millennium power filter
- Is designed specifically for horizontal placement in our extensive selection of Eclipse systems
- Color-coded packaging ensures fool-proof cartridge selection
- Delivers crystal clear, crystal clean water
- Please read all label information on delivery

I have been looking for aquarium filters for some time for a 6 gallon tank. But everywhere I went--I could not locate them. I was beginning to think that I had bought an aquarium that was out dated. Thank goodness I was able to find them on [...]. I was able to change my dirty filter and it works fabulously! My tank is protected and I now have happy fish! Thanks again [...].

I often end up with 'inherited' pets. I've never been a big fan of fish, but my mom decided she was to old to keep up with the care of her two cory catfish, so I ended up with them. I prefer animals that can tell you when they are hungry; but decided to make the effort of owning fish as painless as possible for me and them.

I wanted a tank that required minimal cleaning so purchased the 10-gallon Marineland Eclipse, and some extra filters. I do love this system. About once a month, I rotate out about a quarter or 1/3rd tank of the water; and the filters do the rest. The tank stays clean, the fish seem to like the extra space. I'm very happy. It's made owning fish, mostly painless. Now if I could just figure out how much to feed them on the regular basis, I'll be set.

Works fine. I need to replace mine about every 6 weeks. I know it says to replace every 2-3 weeks, but I have found that if I rinse it out once a week it lasts longer.

The benefits of this filter cartridge are it takes about 5 seconds to change them out - it is very easy. About the only drawback I can see is I wish they would last a little longer before needing to be changed, but that is more of a function of what I keep putting in the tank vs. a product defect.

I am experiencing it hard to find this size filter, since the fish tank we have is a few years old now. Glad to see that I can buy them on Amazon!

We purchased the 3 gallon aquarium for my son's betta fish, Blowie the Scary. Blowie doesn't eat all of his food, and this filter does a great job of getting out the extra food and initial cloudiness when my son puts too much in. The filters are extremely easy to use and my 4-year old can change them himself. It's a really nice set, with easy filter maintenance and I'd recommend it. Sometimes it takes a day for the filter to clear enough out, but it's still high on my list.

The original filter that came with the aquarium (Eclipse Hex 5)seemed to keep the tank cleaner longer. The water is getting cloudy after only 1 week and I only have 1 fish!
It is however very easy to install.

Simple to use, replacement filter does a good job cleaning the water in our aquarium.

These have been hard for me to find, they fit my tank filter great and have been keeping the water very clean. I have heard no complaints from the occupants.