They are pretty good. The only model I reccommend is the whisper 5-15 filter. Its great for smaller tanks. Al the other ones suck.

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CORRECTED video of my fish. This link works. For sure. Really.

Tanks:
20g long: 4 panda cories, 1 honey gourami, 1 apistogramma borellii, 1 male cacatuoides
20g High: 3 bolivian rams, 12 rasboras
8g hex: empty
5g: empty

Do do well for the low cost, if you can afford to get an AC then get it. I got a Whisper 30 for $8.14 and 2 Whisper 60s for like $15 each, but they were on sale. Normally a Whisper 60 is like $40 or $45. The 30 is normally like $20-25.

I got a Whisper 30 with my 29g tank, and it does ok alone. Mine got pretty noisy, cleaning the impeller helps, but it gets loud fairly quickly. The media, IMO is not right.. It has this finer filter bag w/ carbon or whatever in it, than a courser sponge. So all the thicker gunk gets stuck on the fine bag, and the sponge gets almost nothing on it. Mine is so filled with gunk, even after i scrub it in tank water it sometimes overflows over where the intake is, into the tank.

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In my 29 gal:
4 serpae tetras
1 Flame tetras
1 Zebra Danio
1 German Blue Ram
In my 55 gal:
Trigun's 55g Tropical Community!
6 Glo-lite Tetras
4 Emerald Corys
1 Dwarf Gourami
4 Peppered Corys
25 Neon Tetras

So far, I have not had problems with mine. I got a Whisper 30 for my 20 gallon tank. It was cheap and so far has been reliable. The only gripe I have had is that there is not much room for extra filter media or other additions (I added peat moss in a mesh bag, but there isn't much room in there.)

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20 gallon tank - harlequin rasboras, rummynose tetras, panda corys, one lone pygmy cory that didn't die when the others did.

10 gallon tank - planned planted with tetras and red cherry shrimp?

the small filters are good big filters are scarey

I use these purposely on my "long" variety of tanks, due to the low flow rate and cheap cost, as opposed to using one AquaClear or other higher end HOB filter. They are good for the price and get the job done, though if you are looking to max out your filtered GPH, look somewhere else.

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I own both a 1-3gal internal, and a 10gal internal. Never had a problem with either one. The 1-3 is perfect for my betta, who dosent like much flow. No problems with either one yet

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29gal : 2 Shubunkins
10gal : "Blood" the Betta
10gal : "?????" the Betta
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A pretty good filter, got it with a tank kit. It worked great when I had my larger grade sand but when I switched to super fine silica sand it started wearing down alot faster. Easy to clean and the top makes a perfect place to put my airpump, it won't fit on any of the AC filters I've tried.

Definitely not my favorite filter on the market. It works for moving water but it will not last. I have one of these on my 10gal tank and it has been running for 4 years but only with some help. It needs to be replaced very soon. Save your money and spend the extra for an Aquaclear.

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I run 2 whisper 60 on my 55, work great with a full tank of fish. Water conditions keep perfect.

I bought one of these for my 10g and it has worked great, it is super quiet. I cant even hear it when I'm sitting right next to it. Filters are easy to take out and replace carbon if needed. Flow seems good.

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55 Gallon Freshwater

I use two 30-60 Whisper in my 63 gallon. They work okay, intake is very poor. IMO Whisper ranks higher than what it should be, my 30-60 should be ranked for 10-30, thats the main reason I have two in my aquarium.

I've use these filter for years. They break down if you use small grain sand, along with every other PF on the market. What ever size they say the tank should run on, I take off half. If it says it can be placed on a 10gal, I use it for a 5gal or 2.5gal. I LOVE using these filters on my 2.5 gallons. Perfect fit!

Great deal for the average fish buyer, but remember to take off half the gallons the box says it can run on.

Everything about this is CHEAP. Not worth what little you pay!

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I've inherited 2 of these with second hand tanks. 1 Tetra PF10 and a Tetra Second Nature Whisper 2. Of these two the older one works better. The cheap filter replacements tend to bend and lose shape as they age, falling out of slot, and blocking lots of water circulation.

I've replaced both units with 1 AC20 and 1 Fluval C3. Both of these are light years better in filtration and use.

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