I used this to make a reptile aquarium atomizer out of an old sundae. He worked 14 hours a day for a whole year, only failed due to corrosion in 2 places, which violated the tightness of the unit. I soaked it in vinegar to dissolve the solids of tap water for a year and let it run for an hour or two more. If this block was plastic it would have lasted a lot longer! I will buy a plastic version and see how long it lasts. DO NOT run them out of the water as they can destroy the disc in seconds.
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