kiwis Posted June 29, 2018 Report Share Posted June 29, 2018 I have a 140L system (120L display tank & 20L sump) and a Moray 2300 return pump. That return pump is rated as 2,200 liters per hour and max height 2.2m http://www.aquaone.com.au/prodinfo-aquaone/MorayPumps.pdf I've put a plastic ball valve on the return line to slow it down in an attempt to make my system quieter, I've got this set to between 40-50%. Will this slow the rate of the filtration too much for marine? Thoughts? Even if it's pumping 700L an hour the system (1/3 the pumps capacity) it's still turning over 6 times an hour.. Quote Link to comment Share on other sites More sharing options...
Ira Posted June 30, 2018 Report Share Posted June 30, 2018 You also should probably have a small powerhead or two in the main tank for circulation in addition to the return pump. kiwis 1 Quote Link to comment Share on other sites More sharing options...
kiwis Posted July 1, 2018 Author Report Share Posted July 1, 2018 2 hours ago, Ira said: You also should probably have a small powerhead or two in the main tank for circulation in addition to the return pump. Yeah that's part of my plan. Quote Link to comment Share on other sites More sharing options...
livingart Posted July 6, 2018 Report Share Posted July 6, 2018 Slower flow through sump allows more contact time with water and bacteria Quote Link to comment Share on other sites More sharing options...
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