Tunze Osmolator. Mine has been running flawless for over two years. Easy to setup and has an optical sensor for the water level.
Replacement pumps are only $20 and the sensor just needs a couple hour vinegar bath every four months or so.
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Mike
Sandbeds operate like wormholes and the excess nutrients and detritus are transported to a sister galaxy - Bomber
12-7-41 & 9-11-01 Never Forget!
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