The whine could have been piping undersized ? I have the 1200 and it is super quiet . But it has an 1 1/2 thread for outlet so you have to keep it that size as much as you can to keep it from getting restricted
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I'm also interested in this pump DCS-3000 for a new 20 gallon tank that I'm building. I'm worried that it may be too much, but can't find a smaller model. Any suggestion? The reasons I'm interested are: 1. Heat: DC pump should generate less heat; 2. Price.
The setup will be a 20 gallon long display tank and a 10 gallon sump. Head distance will be 3.5 feet. Maybe it will allow me to split the return. Let me know what you think.
Do you know what pipe diameter connections/adapters it comes with? I'm thinking of splitting the return using a Y reduction (1" coming from the DCS-3000 pump split in two 1/2" tubes ending at 1/2" locline nozzles one on each side of the tank).