Do you still have the original pump with it? Or you’ve change it to something differentThe vertex omega 200i that we use is unbelievably quiet. I don't think they are made any longer, should you find one though definitely consider it if noise is an issue.
Noise is relative but surrounding the pump it's superb with operation noise the only thing you'll hear depending on the volute setting is the copious amounts of air going in. Easily remedied with cheesecloth.