As the title says my little giant external pump is too loud. Is there an option thats much quieter? Normally this wouldn't be a problem but the room and tank is not very big and there isn't much room to make it quieter.
Is it shaft bearing or fan noise? If fan, about 15 years ago, someone here posted a pic of quieting their BlueLine/PanWorld external pump by pulling the fan blades off the back and mounting an aluminum heat sink and computer fan.
Isolate it as well as you can. Sit it on a silicone pad, connect it to the hard plumbing using ~12" of vinyl or silicone tubing. IME, a large part of the noise is from vibration. If you can minimize that, it will help a lot.
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