Water Chiller

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ABFour

Feeder Fish
Sep 16, 2025
2
5
3
45
San Diego
I've got a 550 gallon pennisula freshwater aquarium at my office. The filtration is oversized due to the Flying River Turtle. The primary pump is a Pentair Variable Speed which attaches to an Aqua Ultima II Sand Filter. The return line passes through an inline heater and into twin Aqua Ultraviolet UV Sterilizers. The ambient temperature in the office doesn't fluctuate ±73 degrees, however, the plumbing and filtration equipment is located in a room that doesn't have air conditioning. We installed a blower into the room to bring office air into the space, but we're having a difficult time keeping the tank temperature under 87 degrees in the summer.

The heater is set to 80 degrees and is not cycling ON, so this isn't a source of heat. The UV does produce heat, but I need the water quality for the turtle.

I'm starting to investigate a water chiller and had a few questions.

1) Should I plumb the intake / discharge directly into my existing plumbing?
2) Will the head pressure and back pressure prevent the chiller from working correctly?
3) Any brands of chillers to avoid or seek?
4) Any other ideas to get the water down to low 80's?
 
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