• Ready-to-use filter cartridges for Penguin Power Filters
  • Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon–works twice as fast and keeps working long after other carbons quit

Product Description
Each preassembled Penguin Filter Cartridge filters aquarium water through a double thick polyfiber pad which traps more dirt and debris, faster. The filter cartridge is packed with super-efficient pure Magnum Activated Carbon…it keeps working long after most carbons stop. It’s better than a bag: just shake and rinse. The patented ribbed backing evenly distributes carbon for maximum water to carbon contact. No bypass, no tea bag effect…just crystal clear, crystal clean aquarium water. Each Penguin Filter replacement cartridge includes a foam pad and carbon for superior mechanical and chemical filtration. The easiest way to superior aquarium filtration. Rite-Size Cartridge: C

Marineland Penguin Rite-Size Ready-To-Use Filter Cartridges

5 Responses to “Marineland Penguin Rite-Size Ready-To-Use Filter Cartridges”
  1. Tyler Forge says:

    I bought a load of these and saved a ton of money. Petsmart ships, so no amazon prime savings. Still, what a deal. My big tank takes 8 filters. I was avoiding changing them because of cost.

    Funny, I changed all 8 at the same time and threw my tank out of whack. Too much algae and goo left the system with the old filters. I’ll change ‘em in stages from now on.
    Rating: 5 / 5

  2. The Penguin Bio-wheel pumps are great: quiet, effective and long-lasting. (I have a 170 filter in a 39 gallon tank.) These size C filters are widely available, but the Amazon price is much lower than at my not-so-nearby pet store.

    A word of warning. The day after changing my filter three months ago fish started dying. Next morning my 6″ long Plecostomus was dead. Then three Clown Loaches, each about 5 ” long. Within a week I had lost 18 of my 20 fish. Yet there was no sign of disease.

    A water test and much internet searching finally pointed out what I had done wrong. I had neglected my tank for a few weeks. In a rush to catch up, I siphoned out about 30 percent of the water (more than usual), did a “better” than usual job of siphoning up detritus from the gravel. Then – my biggest mistake – I replaced the Penguin filter too! The result is the water chemistry changed too quickly. The Nitrates spiked to a deadly level. My tank, healthy for more than two years, needed to be started over. Took two months and many water changes before I could safely add new fish.

    I visited perhaps a dozen “fish forums” and only one had a comment saying “don’t change filters when you do a water change.’ The Penguin filters and the box they come in carry no warnings. What I (and you) should do is simple: space your water changes and filter changes a week or two apart.

    Now knowing how important the “aged” filter is (especially in a tank like mine with no under gravel filter) I’ve started this habit: there’s just enough space to get a second filter flat against the old filter. After a couple of weeks, I remove the older filter and put the newer one – by now doing some biological filtering – in its place. That way the tank is never depending on only a new filter. For larger tanks (say 55 gal and up), the 330 or 350 Penguin pump holds two filters side by side, so just change one filter at a time.

    Hope this helps you avoid the disaster that hit my tank
    Rating: 5 / 5

  3. I BOUGHT THESE PENGUIN REPLACEMENT CARTRIDGE FOR MY PENGUIN POWER FILTER MODEL 200 VERY GOOD FILTERS. THIS IS THE WAY TO GO WITH THIS SETUP .
    Rating: 5 / 5

  4. K. Folks says:

    This is one of the easiest systems to use and finding these filters for a good price is a bonus
    Rating: 5 / 5

  5. H. Huggins says:

    I live overseas and I found it hard to purchase this item here so ordering online was well deserving. A Company that ships to an apo address always deserves kudos! speedy service
    Rating: 5 / 5

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