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🔇 Keep it quiet, keep it clean — your fish deserve the best!
The Tetra Whisper IQ Power Filter 20 Gallons delivers whisper-quiet filtration with a powerful 130 GPH flow rate. Featuring Stay Clean technology, it stabilizes pH levels and reduces maintenance by preventing buildup. Its self-priming submerged motor requires no manual startup, making it perfect for freshwater and marine tanks up to 20 gallons. Easy-to-change bio-bag cartridges keep your aquarium water pristine, supporting healthier fish and a serene aquatic environment.















| ASIN | B01NC2P7BM |
| Best Sellers Rank | #1,562 in Pet Supplies ( See Top 100 in Pet Supplies ) #3 in Aquarium Filters |
| Brand | Tetra |
| Brand Name | Tetra |
| Capacity | 20 Gallons |
| Customer Reviews | 4.2 out of 5 stars 13,641 Reviews |
| Global Trade Identification Number | 00046798780014 |
| Included Components | See Label |
| Item Dimensions L x W x H | 6.88"L x 6"W x 6.88"H |
| Item Type Name | Pet Supplies |
| Item Weight | 2 Pounds |
| Manufacturer | Tetra |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | Whisper IQ Power Filter |
| Model Number | 78001-00 |
| Part Number | 78001-00 |
| Product Dimensions | 6.88"L x 6"W x 6.88"H |
| UPC | 046798780014 |
| Unit Count | 1 Count |
| Warranty Description | See Label. |
I**N
Great quality.
Works great. Buy this to replace my older Tetra filter - probably 10+ years old. Easy to install, just rinse, plug and it's run great. It's silent - like really silent and the flow control really work. You can control the flow from slow to fast, good if you have baby or small fish. Really great upgrade from Tetra.
A**A
Filter upgrade
Upgraded to this filter for a 20 gallon tank and it works very well. It is quiet and moves a lot of water.
C**Y
BEST FILTER FOR BETTAS
I bought two of these filters despite a couple negative comments. I've had aquariums for 40 years with many different filters. I currently have a 5, 10, 20, 30, 55 and a 120 for tanks. The 10 gallon tank houses 2 Betta fish with a tank divider. One Betta lives with 2 cherry shrimp but the other is too aggressive to add tankmates. I run a filter on each side. Finding a filter that didn't blow the fish across the tank has been difficult. I've tried a few small ones but they failed to keep the tank clean and the filter cartridges were only an inch wide. I decided to take a chance and I haven't been disappointed. Granted, it's only been a few days. The adjustable water flow is perfect for the Bettas and shrimp. As you can see in one of the pictures, one shrimp likes to sit inside the spillway and obviously not a strong current coming out of the filter. The tank cleaned up beautifully in 24 hours. I did put the inch wide filter cartridge from the old filter into the new filter along with the new filter cartridge for the beneficial bacteria. The Tetra filter is super quiet, appears to be easy to clean and intake strainer is small enough not to suck up the shrimp. The other issue I've had with other filters is failure to prime when our electricity blinks which happens a lot in our town. The Tetra is self-priming so I no longer have to worry. I like that it also has a bio-scrubber (the green basket that cultivates beneficial bacteria). I certainly will update if there are any problems. UPDATE: 16 days...The filters are keeping the tanks clean and the self priming has been wonderful during the last power flickering. The only problem I had is the filters are just a bit too wide for my glass top to sit as far back as it needs to go. Using a pair of snips, I put a small notch into each side of the filter now allowing my glass top to slide into place.
A**A
Probably just user error
My tank is taller than an average 40 gallon tank so this just barely works for my fish tank struggled to get it together and working, but I’ve had no issues since installing. It works pretty well so far.
M**T
Perfect replacement for an old unit that no longer works.
I’m using this on a 30 gallon aquarium. It’s replacing a unit that worked for many years, until the impeller broke a couple days ago. Assembling this one and getting it in place was easy. I had it up and running in no time at all. It’s very sturdily built, runs quietly and keeps the water clear. The price was competitive for power filters of this type.
F**O
Great filter for 36 gallon aquarium
I bought this Whisper IQ filter for my 36 gallon aquarium and it works perfectly. It has a strong water flow, and when you install it, the waterfall-style output is pretty powerful. It can make a little bit of noise because of the water flow, but nothing too annoying. It keeps the water clean with no issues. Overall, I’m very satisfied with this purchase and would definitely recommend it.
P**S
A quiet filter
This Tetra whisper Filter is the Quietest filter I’ve ever had. I’m using it on my 20 gal tank. No humming or vibration just quiet and it keeps the water clear.
J**H
Cleaned well but iq60 but didnt last a year.
Worked for months and cleaned amazing, just boughts the filters to replace. But motor died.
N**L
GREAT value, very quiet, adjustable flow and outside the tank, what's not to love.
Best filter I have bought in decades, provided it endures. The flow control was tricky, the difference between trickle and waterfall is a tiny move of the dial, but just having flow control is the main point. It's VERY quiet. I hear the trickle of water, not the filter. The filters themselves are sold as kits you can make for very cheap. The flow control/suction goes pretty fast, i suspect you could use this for a 50G freshwater tank in a pinch.
K**A
Aquarium filter
Product is very good but not working in UAE
C**N
Excelente producto.
Lo utilizo en una pecera de 40L, así que me queda super sobrado. Mega silencioso, poco ruido, poca vibración. Casi no se nota que está. Recomendada 👍🏻
C**N
Excelente y no hace ruido
Comparado con otros filtros del mismo tamaño, mueve un buen volumen de agua con muy poco ruido, funciona de nuevo si se va la luz. Muy buena calidad y recomendable.
A**R
Arrived with pieces missing and parts broken
Could not use!!!
Trustpilot
2 weeks ago
5 days ago