water cooling

working on a diy water cooled dehumidifier to run off the 10,000 gallon cistern directly below my grow....I am a auto mechanic not an engineer so......Thoughts, comments, questions, suggestions concerns? some info: started off life as a royal sovereign 45 pint dehumidifier Dehumidifier...

Is there something out there like this, around the same price that is complete (plug and play)? https://www.amazon.com/Thermoelectric-Peltier-Semiconductor-Refrigeration-Chiller/dp/B07F1ZFWC6/