Manufacturer's description:
http://www.marineland.com/products/consumer/con_penguinfiltersnew.asp
NEW PERFORMANCE FEATURES
Noise-Reducing Vented Cover For quieter operation
Two-Piece Filter Hood For flip-top filter cartridge access
Adjustable Mid-Level Intake attaches to the Intake Extension Tube to provide increased water circulation.Extra Media Slots (Penguin 200 and 350) for an additional Rite-Size Filter Cartridge or Penguin Refillable Media Cartridge for enhanced chemical filtration.Plus...
Leak Proof, Easy-Care Design.
One-piece tank and motor assembly means no O-rings to fail.
Single moving part removes easily for cleaning.
No oiling or motor maintenance required.
Automatic Self-Starting Feature Restarts automatically.
No messy siphons or valves.
Worry-Free, Safety Engineering.
UL listed; cUL or CSA listed.
Epoxy-sealed, moisture-proof motor ensures safe operation.
Penguin 100 - 100gph (up to 20G tropical or as additional filter on goldfish tank)
Penguin 150 - 150gph (up to 30G tropical or as additional filter on goldfish tank)
Penguin 200 - 200gph (up to 50G tropical or as additional filter on goldfish tank)
Penguin 350 - 350gph (up to 75G tropical or 35G goldfish tank)
The following photos will also show the filter cartridge modifaction that I made to remove the carbon and also how I add extra polypad filter media for increased filtration between the bi-weekly cleanings. The reservoir on this filter is not very large so it does not have a lot of room for very much media but it could hold a small media bag full of some type of bio-media. I just prefer to use extra polypad media which provides both mechanical and biological filtration.
Here is the filter on the tank with the two covers in place. There is a top slotted-cover over the filter reservoir and a separate front cover over the Bio-Wheel, so as it spins, the spray drips back down into the waterfall and tank.

Here is the filter with the two covers removed.

Since this cleaning was going to take longer because of the photographs, I removed the Bio-Wheel and had it floating in the tank, so that it would not dry out and kill the nitrifying bacteria. Usually, I set it in the removed front cover while I'm cleaning the filter. Anytime the fliter is turned off for any length of time (e.g. during transport or a power outtage), the Bio-Wheel should be floated in the tank to keep it from drying out, keep the nitrifying bacteria alive and to help continue "cycling" the ammonia in your tank.


I first removed the intake tube and impellor assembly. I run water through the tube to flush out any large debris and occasionally I clean it with a bottle brush and clean the impellor housing as well.

Here is the filter cartridge and the extra polypad filter media. I use bulk polypad filter media comprised of blue (coarse) and white (fine) polypad material and cut the large sheet into the sizes I need for my various filter systems. A package of this polypad media is inexpensive.

This shows a top view of the filter and reservoir. I use the "dirty"
extra polypad to clean off the buildup on the waterfall outlet and any other buildup, before I clean the polypad material. If needed, I clean the Bio-Wheel holders with a toothpick to remove any buildup that might slow down the spinning of the Bio-Wheel.

Here are the filter cartridge and extra polypad filter after cleaning under dechlored tap water from my PUR faucet filter. This keeps some of the N-Bacteria alive. I have two filters for this tank and clean one every other week to minimize disruption of the biological filter. If I only have one filter system on a tank, then I only squeeze/swoosh the filter media in removed tank water so I do not kill off any of the good nitrifying bacteria.

Here is the other side of the filter cartridge and polypad filter media.
The blue and white polypad material is a combination coarse/fine mechanical filter media, which also provides additional surface area for growing good nitrifying bacteria.

This shows how I used a razor knife to slice open the black slotted plastic on the back of the filter cartridge so I could dump out the carbon and re-use the filter cartridge over and over and over. Basically, I cut an "H" along the sides and across the middle but a "U" or inverted "U"
could also be done. I thought the "H" would leave the frame structure intact. I do frequent 25% PWC's (partial water changes) so I do not run carbon in all of my filters. I do keep bulk carbon on hand for when I need it and use filter media bags to hold the carbon. This is still the original filter cartridge that came with the system two years ago.

Here is another picture showing the "surgery" I did to the filter cartridge to remove the old carbon, yet allow me to reuse the filter cartridge.

Here is the filter Cartridge and extra polypad media replaced in the reservoir. Note how I have the extra polypad sticking up about an inch above the filter cartridge. I then fold this over the top of the cartridge so that when the filters start to get dirty and the water fills up more in the reservoir, it will eventually overflow the polypads but still get partially filtered by this extra inch of polypad.

Here is the filter sytem cleaned and back on the tank. That white buildup is the calcium/mineral buildup from the evaporated hard tap water that I have. I would normally just use a little white vinegar on a paper towel to easily wipe that off.

BTW... that 1/2 filled 10G tank in the background is an H-tank where I have one of my goldfish right now. He's not feeling well and has a fin-tear/rot issue so I have him in the H-tank with a bubble filter so he doesn't have to deal with the over-filtration in the main tank. I'm treating him with MelaFix/PimaFix cocktail and anti-bacterial food for the past three days. He's doing much better but will stay in the H-tank till he's back to his perky self!
Lenny Vasbinder aka GoldLenny in forums