Give your fishies a clear swimming environment with the quiet Tetra Whisper Internal Power Filter with BioScrubber. The submersible filter includes a 3-stage filtration system with a dual-sided Bio-Bag mesh, which catches debris and fish waste while the activated carbon absorbs odors and discoloration. The bio-scrubber features an anti-clog design for convenient and easy maintenance. The bio-scrubber also has a solid back, which pushes the water making it flow evenly over the bacteria-rich bristles for supreme performance. This filter is compatible with Tetra Bio-Bags for easy and reliable maintenance.
Features a submersible filter with a quiet, convenient, 3-stage filtration system—chemical, biological and mechanical.
Dual-sided Bio-Bag mesh that catches debris and fish waste with an activated carbon that absorbs odors and discoloration.
The bio-scrubber’s solid back allows the water to flow evenly over the bacteria-rich bristles for best performance.
Anti-clog design for convenient and easy maintenance also provided by the bio-scrubber.
3-10 gallon uses medium Whisper Bio-Bag Cartridges; 10-20 and 20-40 gallon uses large Whisper Bio-Bag Cartridges.
When cleaning the filter, unplug it. Do not use detergents or soap, as residues may harm fish.
Do not use sand in the aquarium when using the internal filter.
If the foam grid becomes clogged, remove and wash with water until debris is removed.
Replace filter cartridge every four weeks. To change the cartridge, unplug filter, remove and replace cartridge, and re-plug the filter.
If the motor is noisy, unplug the filter and remove it from aquarium. Remove the motor, open its cover, and flush gravel, leaves, or other debris with cool water. Replace the motor into the filter, mount the filter in the aquarium, and re-plug the unit.
It takes a few weeks for new aquarium water to be conditioned. You can use EasyBalanceTM to speed up conditioning. During the conditioning period, feed fish lightly and be sure all food is consumed.
When putting tap water into the aquarium, add AquaSafeTM water conditioner to neutralize harmful chlorine and chloramines.
Insert the filter cartridge and foam grid. (Note: the front of the foam grid is market "front" and should face the front of the internal filter.)
Hang the filter inside the aquarium and press the suction cup against the aquarium glass. Drape wire over the aquarium wall.
The lip of the internal filter should be above water level, and the bottom of the internal filter should be at least one inch above the aquarium gravel. When positioning plants and other items, leave approximately 1/2 inches of clearance around the filter.
Raise or lower the internal filter by adjusting the filter hanger. Rotate the filter hanger 90 degrees, remove it, and replace it in an alternate alignment hole. (In turtle tanks, the bottom of the internal filter should be submerged in at least 2 inches of water.)
If the filter hanger does not fit on the aquarium frame, it can be replaced with an extra suction cup (provided). When pressed firmly, the suction cup will fit snugly into the filter.
I have always been a fan of Tetra's Whisper filters. My old model was so quiet it was hard retiring it. This new model not so much. Although it fits well in my 10 gallon tank, I can hear the motor humming all hours of the day. What's weird is the noise would go away for a couple minutes, making it whisper quite, then the humming will come back. I wish the old models were still available for purchase. I'll just have to suck it up wit this one.
False Advertisement! It's LOUD!!
on Oct 5, 2020
This filter is a piece of TURTLE POOP! IF THIS IS A QUIET FILTER THAN WHOEVER CREATED THIS THING MIST HAVE BEEN DEAF!!! IT IS LOUDER THAN THE ONE I REPLACED IT WITH. I HAD TO TURN IT OFF AT NIGHT INORDER TO SLEEP BECAUSE I COULD HEAR THE WATER DRIPPING FROM THE OTHER ROOM!!! IT'S RIDICULOUSLY LOUD ALONG WITH THE VIBRATING SOUND! THIS WAS SUCH A WASTE OF MONEY AS I ONLY BOUGHT IT BECAUSE IT ADVERTISED THAT IT WAS SILENT! I FELT LIKE I WAS UNDERGOING JAPANESE WATER TORTURE!! THERE IS ONLY ONE STAR BECAUSE I HAD TO PUT A RATING BUT IN REALITY I WOULD GIVE 0 STARS!
Good little filter for the price
on Oct 17, 2020
This filter is quiet as advertised and seems to work well. I've been using it for about two weeks since replacing a larger canister filter that kept malfunctioning. It's not as powerful as a canister filter but keeps the water clean and safe. I have a turtle in a 30-gallon breeder. This filter does the job but I do think I'll start doing water changes biweekly instead of monthly.
this is how you spell LOVE
on Nov 5, 2020
LOVE LOVE LOVE these filters. I have one in each size for my different tanks. I do find the one for the 5 gallon is a bit bigger than I was hoping, but it’s worth it. I have a betta in the tank and the flow/current doesnt sweep him away. It’s great. Super quiet.
on Sep 18, 2020
I was searching for compact water filter for my 40 gal fish tank. Previous I had run for 10years so may be its time. From the Small pic on my phone and by the size of tank they recommend Ok may be that one is OK. When it arrived I thought OK that is a bit too big and how you attach it to the outside wall then after looking at bigger pic on that box ( no other instructions) I realized that it should be INSIDE the tank. That ugly THING would occupy large portion of my tank!! What the point to have it if I cannot see my fishes Aquariums are decorations anything other then fish and plants supposed to be hidden . That is monstrosity!!
My much needed box
on Nov 2, 2020
Chewy is on top of everyone else, getting things to me as fast as possible, and because I seldom go out, I really needed these items..
Thanks Chewy you are the BEST!
Happy but Sad
on Sep 18, 2020
I have to give it 5 stars because it's exactly as advertised. Whisper QUIET. Sad thing is when I saw that water falls out of it, I was hoping for a water falling sound but it's REALLY quiet. I ended up raising it a bit with the suction cups provided so it would make more sound. So far, so good.
Have two of these
on Oct 15, 2020
I have two of these in my 75 gallon turtle tank. It keeps it clean and works well........but have to change filters every two weeks.
on Sep 19, 2020
This is perfect for my 10 gallon tank! I even have goldfish and it handles the load keeps a crystal clear tank and best of all it's designed so none of my fish can get trapped
Perfect for crayfish tank
on Aug 31, 2020
Using this filter in a 10 gallon planted tank that houses a crayfish. It was easy to set up. I keep the water level just under the top so I get as small of a waterfall as possible. The filter itself is very quiet.