I was looking for a solution to keep my axolotl aquarium below 70 degrees and wanted something more professional than a fan mounted on the side of the tank. It fits the bill without breaking the bank. It works similar to your home thermostat. You set the temperature, and when the water rises a few degrees above the set temperature, it turns on and cools it down again. Setup instructions are not included, however instructions can be found in the images on the Revain product page (where you buy it). I would like a slight design change to the pump built into the unit (because the pump is always running even when the unit is not cooling the water). I will connect it to an external canister filter to solve this problem. Overall I would buy it again.
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