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#11
06-09-2010, 01:00 AM
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1. Closed-cell foam (the same as for a backpacking mattress) underneath the sump.
2. Closed-cell foam underneath the return pump. 3. Connect the return pump to the pvc pipe with a length of flexible hose. My Mag 12 return pump has been silent this way for years.
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120 gallon sps/anemones/LPS reef since 2004 Apex controller 8 x 54 watt T5 PowerModule Herbie's silent overflow system Jebao DC 12000 return pump Jecod CP-40 Cross-flow circulation device Mini Bubble King 180 Barr Aquatics calcium reactor Bucket fuge 
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#12
06-09-2010, 01:13 AM
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I used that stuff from J& L mentioned above - its very porous and a medium hard plastic sorta mesh - works well as a bulkhead to deflect/disrupt water flow from say a skimmer outport or beneath falling water - its quite thick.
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CAD 22 brent
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#13
06-09-2010, 01:54 AM
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Ive had good lluck with those exercise mats, the interlocking kind.
They look like the same things swimming pool toys are made from. Anyways my ocean runner 6500 was always noisy till i used that foam under it. Also i found moving it further away from the sump sides made a big difference. the sides amplified the sound.
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This is my personal user name I do not represent any company. “When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.” ”
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