Basic Noise Troubleshooting

There are many reasons for excessive noise with any overflow system. Every system is going to be slightly different due to various factors in your design, flow and installation of the plumbing. While we would love to have a blanket answer for everyone's setup, that just isn't the case. You will need to look at your system and evaluate what may be causing the noise in your system.

Here are some important things to look for in your setup to begin troubleshooting:

  • Check you internal pipe lengths and make sure they are set properly for your flow rates. Different rates will require different pipe lengths.

  • Was the proper gate valve used? Do not use a ball valve, only use a gate valve to properly tune the overflow.

  • Are your sump drain pipes submerged under water? They need to be submerged and small slits cut into them just below the water surface.

  • Are there any internal flow pumps in the aquarium. If so, are they pointed at the overflow front weir? This will introduce noise into the front weir. Try angling the flow pumps away from or down in your aquarium.

    • Our V3 Front Weir plate can help eliminate the noise produced by these pumps, but the flow should be redirected first. If you have a V2 overflow you can upgrade the front box to the V3 with this plate. Contact us for more information.

  • Trickling noise can be cause by improper external box pipe lengths. The water level in the rear box should be over the incoming bulkheads to raise the water level as high as possible in the rear box. Low water level can cause excessive noise in the front box.

  • What is your flow rate of the Pump to your tank? Are you running a over 2500 GPH? Try reducing the flow rate.

See Basic Tuning Approach for more details on reducing noise.

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