I have two of these that I purchased together. One pump is almost silent, but the other one is noisy. You hear it ramp up constantly (even at a distance). Is there something to check or verify. I am only running it at about 60% power.
I have two of these that I purchased together. One pump is almost silent, but the other one is noisy. You hear it ramp up constantly (even at a distance). Is there something to check or verify. I am only running it at about 60% power.
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