why does it cost a $1 less than replacing the pump? i mean come on

Craig, I don't understand this question. This repair kit is for sale from 7 different vendors. Six of them offer this item from about $15 (including shipping) to $19.99 with Free shipping. One vendor has a higher price of about $32 with shipping included. Obviously you would not pick the highest priced vendor. The pump kit itself sells on Amazon as best i can see from $35.99 to 59.99. You can save MUCH more than a dollar, about $20 by buying the repair kit only unless i am just not seeing what you are seeing. I hope that is helpful.

will this fit for tetra whisper 100 100-gallon aquarium air pump 77850-916? mine is start making loud noise and one air line not working. thanks

Yes, this repair kit will fix the problem described. Remove the four screws on the bottom of the air pump and remove the cover. The diaphragm unit will slide out, it may be a little stiff but it will come out. Make sure the two o-rings are in place and slide the new diaphragm unit in place. There is no adjustment needed. Plug pump in to make sure everything is working, then replace the four cover screws and you are done.

Will this fit the wisper model 77850?

Since the 77850 is the Whisper 100 air pump, then yes, as per this item's description and item number, it is the repair kit for the Whisper 100.

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Tetra 75077878 77878 Whisper Repair Kit for 60 and 100 Air Pump

Product ID: 247462053

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Details

Color
Multi
Brand
Tetra
Material
Plastic
Item Weight
0.02 Pounds
Power Source
Corded

🔇Sound Dampening

🔧Repair Kit

🇺🇸Made in USA

Description

🔊 Silence is Golden: Elevate Your Aquarium Experience!

LIGHTWEIGHT DESIGN - Weighs only 9.07 grams for easy handling.
DURABLE CONSTRUCTION - Built to last, ensuring long-term performance.
PRECISION ENGINEERING - Designed for optimal air flow and efficiency.
UNIVERSAL COMPATIBILITY - Perfectly fits Tetra 60 & 100 air pumps.
WHISPER QUIET OPERATION - Experience tranquility with minimal noise.

The Tetra 77878 Whisper Repair Kit is designed specifically for Tetra 60 and 100 air pumps, featuring sound dampening technology for a quieter operation. Made in the USA, this lightweight and durable kit ensures your aquarium remains a serene environment while maintaining optimal air flow.

Specifications

Manufacturer	Tetra
Country of Origin	USA
Item model number	75077878
Product Dimensions	0.05 x 0.05 x 0.05 cm; 9.07 Grams
ASIN	B004PB93AI

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