| Re: New sump ???`s Did you try putting an air line tube down the pipe going to the sump? This will allow air to escape from the pipe and should quiet it down quite a bit.
You'll probably need to adjust how far to insert the tubing until you find that sweet spot that makes it as quiet as possible.
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Terry
150g predator tank full of killers. Soon to be upgraded to a 360g. 450g reef
300g sump.
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