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Old 08-31-2014, 11:22 AM   #31
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Plenum systems are very very rare in salt water tanks nowadays. Partly because they take up soo much space in the tank and partly because they are comparable in their effectiveness to a deep sand bed.
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Old 08-31-2014, 01:29 PM   #32
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the place to utilize a plenum setup to it's fullest potential with the least aesthetic impact is in a refugium.

one of the caveats of a plenum system in saltwater is that you have to "feed" it, same as dosing vodka or other carbon source.
There are more efficient methods available for salt water systems today.
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Old 08-31-2014, 01:54 PM   #33
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Thank you for this conversation! What do you think about putting a fairly fine sponge on the outside and inside the PVC using ceramic media? Although, there wont be much room inside the PVC but I could use a 3/4".

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What I would do is use 2" PVC as the main body of the filter, maybe 4-6 inches tall, capped at bottom end, threaded cap at the top drilled to fit a length of 3/4" PVC.
Drill a bunch of holes into the 2" piece and then fill with bio-media of your choice. then wrap sponge material around the outside of it and run an airline down the 3/4" pipe and you're done.

you could also use black ABS pipe if you don't like the stark white of PVC.



as you can see this is a basic idea that can be tweaked myriad ways to fit your particular needs.
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Old 09-01-2014, 01:43 AM   #34
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Great idea!!! Thank you!

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Old 09-01-2014, 09:35 AM   #35
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These plastic pot scrubbers are great, they have a huge amount of surface area and will never clog. You can get them from a dollar store usually. I use them in all my filters.

Just load them in and then put your fine filter media above it. The lack of micro holes that most popular media has nowadays makes it so the biological filter media can't really get clogged.

Best bang for the buck. I use them in my canister filters. Dollar store, $1 for a bag of 6.
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Old 12-19-2014, 09:08 PM   #36
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Do those little sponges leach out chemicals though or dyes?


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Old 12-19-2014, 09:11 PM   #37
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Do those little sponges leach out chemicals though or dyes?


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Nope, they are just a bundle of plastic strips. No leeching or chemicals.
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Old 12-19-2014, 11:25 PM   #38
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Excellent idea!! Would you need a fine catch sponge for finer particles to keep water clear though? Currently I have two sponges and biomax in my aquaclear filter. It came with carbon too but I don't use that. When my sponges get torn up could I just replace them with one of these and nothing else but biomax?


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Old 12-19-2014, 11:37 PM   #39
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You might be better off replacing the sponges with new sponges. The round shape of the pot scrubbers might allow too much bypass in the AC filter box. But that's not a bad idea.


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