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This is one of two things required for evaporative coolers. The second is a good sacrifice anode of zinc. These cakes neutralize the alkali in the water, greatly reducing the buildup of crystals on the pads of the evaporative cooler, and help combat the black algae that can get out of control. The alkali combines with the chemical in these cakes and precipitates to the bottom of the water tank, where it can be flushed out. I put in 2 at a time, and use quite a few every season. Keeps the air smelling clean and allows the expensive 1-foot thick pads in the Mastercool units to be used for several years.
Verified purchase: Yes | Condition: New
I always use these in my Evap Cooler, they make the air smell & clean. I usually go through 3-4 per cooling season. Great product!!
Verified purchase: Yes | Condition: New
This product will definitely make seasonal clean up service much easier. The minerals just flake right off when dry. Well worth the money in saved labor!
Verified purchase: Yes | Condition: New
The swamp cooler isn't as cool as it could be without cooler cake. Makes the air smell like winter.
Verified purchase: Yes | Condition: New
works well in our cooler.
Verified purchase: Yes | Condition: New
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