Acrylic overflow+active carbon canister design

kentrob11

Premium Member
I designed this to be used inside of a big Rubbermaid stock tub and wanted to get some input before building it this week. The key focus of this is to provide active use of carbon in a sump which is typically difficult to baffle. Essentially, it's a 12 x 8 x 22 acrylic box with 2 2" PVC ELS coming off the side which are attached to 2 5" diameter by 6" tall carbon canisters. water flows upward through the canisters and out the ELS into the acrylic box where it flows downward through the filterfloss to the bulkhead at the bottom which is connected to return pump plumbing. Basically, all of the return water is run through the carbon and the filterfloss 2" or so under the water surface should eliminate any micro bubbles. Of course, The same design could incorporate smaller 3" or so canisters for phosban and such- I may add one of those as well. Any thoughts or comments?

8543overflowsump.jpg
 
Looks like it would work to me. With that flow rate through the carbon you will get a lot of biological filtration bacteria growing on the carbon which could be a bad thing when you replace it.

Kim
 
I see your point but in a 350 gallon system with 300lbs of liverock I don't think it would be an issue.....
 
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