Herbie Help

[reefwars]

Originally Posted by duncangweller

When its tuned and how I like the thing is silent. It just gets noisy when the level fluctuates. I have thought of throttling back my pump but my gate valve isn't very open in order to maintain a siphon so I never bothered.

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Fluctuations in the return chamber create fluctuations in how the pump operates , this then leads to fluctuations in the overflow , the gatevalve is set based on the pumps running condition so any fluctuations on how it operates is derectly linked to your herbie oveflow , It is very common in herbie set ups

Throttling back the pump won't do anything as its not the speed of the pump but the consistency it's running at.