I researched chillers extensively and settled on JBJ. Reviews seemed to indicate that they were good units, but god help you if you have issues because JBJ customer service is awful. Well, the first chiller I received was defective (internal fan did not work) so I contacted JBJ service. Shame on anyone who bad mouths these people! JBJ service was outstanding, responsive, helpful, and send me a brand new chiller free of charge, along with a return label to send my old one back, and I didn't even have to ship back the old one until the new one arrived. While I was disappointed to receive a defective unit at the outset, JBJ makes a great product that they stand behind.

This cooler was really easy to set up. I bought an external pump with 1/2" tubing. Buy the installation kit that comes with it and you will have the tubing you need. I keep the temperature between 59 and 62 degrees. You can see from the picture, that I was approaching the upper limit and the cooler just started up. It's not as loud as a wall unit A/C and is not noticeable during computer meetings. My axolotyl appreciates the constant cool temperature. I recommend this cooler for a cold water aquarium.

I was skeptical about spending this much money on this unit but so far, I'm glad I did. Working flawlessly. Keeps my recirculating deep water culture within 1° of the set point. I run my system at 65° and it's in an ambient temperature of around 90°. At this point I would definitely buy another one. Btw... 36 gallons in my system.

It is very quiet. Cools pretty quickly. My main gripe is the thermostat stinks. It is off by over 1 degree F. So I had to set it to 77 in order for it to cool the tank to 78. On top of that it is very slow to read changes in the water temperature. My tank is in a very sunny room. When the sun is blasting in, the tank heats up relative quickly, however the chiller is very slow to register the increasing temperature. Same for when it is cooling the tank. When the tank is heating up, the thermostat on the chiller can be low by almost 1.5 degrees. About an hour ago, the chiller said it was 77.9, however my very expensive calibrated thermometer said the tank was 79.1. Shortly thereafter, the thermostat hit 78 which kicked on the chiller. After running for over 20 minutes, the temperature gauge on the chiller said the temp was 77.9, however the digital thermometer in the tank said it was already down to 78.3. So within 30 minutes, the thermometer on the chiller read 77.9 while the actual temperature in the tank was 79.1 and then 78.3. The chiller ran until it read 76.8 and the temperature in the tank was 77.4. So earlier it was off by 1.2 degrees but later it was off by .6 degrees. But again, as the tank heated up, the thermostat on the chiller didn't keep up. The chiller thermometer read 76.8 until the tank temperature hit 77.9. As long as the temp in the tank doesn't heat up too fast, it seems to be about 1.2 degrees low.

This is the second JBJ Chiller I have owned. The first one ran 15 years without any problems till I finally sold it. This one is the same high quality. It is silent to where you have to see if the green light came on to know it has started cooling in my living room. I can barely hear it when it engages. It is powerful and cools my 220 gallon Tank very quickly. Just a high quality product JBJ makes that is worth every penny if you value your Reef Tank inhabitants.