An acrylic fan tray can keep those 120mm fans in place over your sump blowing down safely, less likely to be dropped into the water. Fans are an inexpensive way to cool a tank in the warmer months, possibly eliminating the need for a chiller. Built to fit your exact sump, I just need the inner and outer measurements so they are notched to nestle in place perfectly.

Fits one or two fans. These are the fans I recommend:  http://www.melevsreef.com/product/icecap-smart-fan

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