Cool Down Your Aquarium with a DIY Chiller: Step-by-Step Tutorial

This video is about how to make a DIY aquarium chiller or a DIY Peltier water cooler for aquarium to lower the water temperature in summer. Using this chiller, I was able to reduce the water temperature of my 12 gallon fish tank from 28°C to 25°C in about 2 hours.

If you have a bigger tank, you will need to increase the number of Peltier modules as well as other materials such as cooling fans and small heatsinks etc. You will also need to increase the size of the large heatsink and water cooling block.

This model is suitable for fish tanks up to 20 gallons (with 2 Peltiers max).

N.B.
👉 If you find that the heat-sink is getting too hot and thus the water is not cooling enough, use a larger heat-sink for more heat dissipation and better cooling.
👉 It is for freshwater aquarium use only. Do not use it in saltwater or marine fish tanks, as salt water will damage the aluminum cooling block.
👉 Do not run the pump dry, make sure there is water inside the pump.

Useful Links :
Thermoelectric Peltier Cooler DIY Kit - https://amzn.to/4a2JiXZ
W1209 Digital Temperature Controller Thermostat - https://amzn.to/43Ohchd
40mm Aluminum Water Cooling Block - https://amzn.to/4bBRbov
12V DC Brushless Water Pump - https://amzn.to/41CLGRh
12V 10A Power Supply - https://amzn.to/41YsFZV

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MadeByKM does not necessarily recommend or endorse any specific company or brand name product that may be discussed or featured in the video. Brand name products are used because they are readily available, likely to be known to the viewers, and their use may aid in the understanding of the video. MadeByKM acknowledges that other brand names or generic products may be substituted and may work similarly or better than what featured in the video.