Tetra 77855 Whisper Air Pump, 100-Gallon

I have a 95 gallon tank and have went through several of these whisper 100's to power multiple airstones. At first it blows very strong air through both outlets. Over time one or both of the outlets stops blowing air, or blows it so weakly that a bubble or 2 might come out of the airstone. These are made so cheaply and I am about to complain to the company. I have went through 4 in the last year. I guess the diaphrams over time just conk out. I am awaiting a few rena 400 pumps and hope they are more reliable.

I have a 55 gallon aquarium but it is deep, so I needed a powerful air pump replacement when my unit failed. I got overnight shipping on this, because my fish could not wait. When I took it out of the box and hooked it in, it was VERY loud-but it had good aeration. On the second day, there was no output from one of the ports; and on the morning of the third day there was no output at all. But it had finally gotten quiet!! I placed another overnight order and got my original brand of pump and have had no problems. The whisper pump will not be recommended by me to anyone. The box was well packed and undamaged, so obviously the QA at the factory was not completed.

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This thing was quiet when I first got it.

3 months later it sounds like a pet store.

I should've laid down 60 bucks for the Rena.

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I have 10 of these running sponge filters in my fish store. If you restrict these pumps in anyway, such as using a valve, the diaphragms will rupture. If you run them wide open they last for years. You can wreck one in minutes by simply turning a valve off. The cheep diaphragms can't handle any back pressure. I'm guessing the Chinese never tested them that way and went ahead and made 1,000,000 to sell in the US.

Good pump if don't restrict it.

You get what you pay for...

The Rena one is much better.

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I purchased the Whisper 100 about three weeks ago to drive both tubes on an undergravel filter in a 30 gal tank. I was replacing a Whisper 40 that wasn't able to drive two tubes. The 100 was noticeably louder than the 40, but still OK in my living room. You could tell it was there, but you could tune it out. Until a couple of days ago. The whisper turned into a rattling hum on the left side. Adjusting the airflow made no difference. I had to disconnect the tube. That did the trick, until today when the right side started going south. So I unplugged it and now have two separate pumps (a whisper 40 and some other tiny one I got at Walmart) running the two tubes. Both of them together are quieter than the 100 was when it first came out of the box.

I give it a 2 instead of a 1, because I could probably send it in and get it fixed, but at this price it's just not worth the trouble.

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