ad-button
Reply
 
LinkBack Thread Tools
Old 02-16-2012, 11:56 AM
  #1
Pajama Cardinal
 
reefnJeff's Avatar
 
Join Date: Feb 2012
Location: Saint Cloud, MN
Posts: 1,413
Skin: Mint
Karma: 7355007
reefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond repute


3reefer 
 
gallery
Default Plenum live sand system?

Have any of you used this system in your tanks with success and how did you construct it?
reefnJeff is offline   Reply With Quote Top
 
Click Here!
Old 02-16-2012, 12:03 PM   #2
3reef Sponsor
 
TritonsGarden's Avatar
 
Join Date: Jun 2008
Location: Lawrenceburg, TN
Age: 53
Posts: 537
Skin: Classic
Karma: 4824405
TritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond repute


 
gallery
Default

Had a 55G once with undergravel filter. Ran water through the filter for a few weeks then capped off the riser tubes, leaving the plenum under the sand for an anaerobic zone. System ran for a couple of years before we took the system down. No problems and low to zero nitrates.
TritonsGarden is offline   Reply With Quote Top
Old 02-16-2012, 12:16 PM   #3
Fire Goby
 
coylee_17's Avatar
 
Join Date: Sep 2008
Location: Peterborough, Ontario, Can
Age: 31
Posts: 1,328
Skin: Mint
Karma: 3915301
coylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond repute


 
gallery
Default

I've read a lot on them and they used to be the standard from what I read. Just have fallen out of favour recently for newer methods. I have never used one myself, but I do think that they are a bit dated and have been replaced for a reason. Just my 2 cents.
coylee_17 is offline   Reply With Quote Top
Old 02-16-2012, 12:27 PM   #4
Pajama Cardinal
 
reefnJeff's Avatar
 
Join Date: Feb 2012
Location: Saint Cloud, MN
Posts: 1,413
Skin: Mint
Karma: 7355007
reefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond repute


3reefer 
 
gallery
Default

I heard this sytem was really good on nitrates, what was suggested to me was to put crushed coral on top the undergravel filter, then place a screen on top of the crushed coral, then live sand on top the screen, just not sure how this system works.
reefnJeff is offline   Reply With Quote Top
Old 02-16-2012, 12:31 PM   #5
Pajama Cardinal
 
reefnJeff's Avatar
 
Join Date: Feb 2012
Location: Saint Cloud, MN
Posts: 1,413
Skin: Mint
Karma: 7355007
reefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond repute


3reefer 
 
gallery
Default

What are some of the newer methods? I'm kind of old fashioned in my thoughts and age but I always believed newer is not always better.
reefnJeff is offline   Reply With Quote Top
Old 02-16-2012, 12:46 PM   #6
3reef Sponsor
 
TritonsGarden's Avatar
 
Join Date: Jun 2008
Location: Lawrenceburg, TN
Age: 53
Posts: 537
Skin: Classic
Karma: 4824405
TritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond repute


 
gallery
Default

Coil denitrators
Sulfur reactors
Algae turf scrubbers
Refugiums
Deep sand beds
Carbon dosing i.e. vodka, vinegar or biopellets

You name it. There are many methods with varying degrees of effectiveness.
TritonsGarden is offline   Reply With Quote Top
Old 02-16-2012, 12:52 PM   #7
Fire Goby
 
coylee_17's Avatar
 
Join Date: Sep 2008
Location: Peterborough, Ontario, Can
Age: 31
Posts: 1,328
Skin: Mint
Karma: 3915301
coylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond repute


 
gallery
Default

I think part of the problem with the plenum system was that it didn't provide for a place anaerobic bacteria as there was constant movement through the substrate. This is a very important part of the nitrogen cycle in our tanks. Also they would collect detritus and become nitrate factories overtime without proper maintenance (we tend to get lazy overtime and why add more work). I've never used this system so I could be wrong.

Now a days, I think most would recommend a sump/fuge (remote area for filtration). Although all that is really needed is an area for bacteria to colonize (Live rock) and circulation. A protein skimmer can certainly help with export of wastes.

You won't find many tanks on here that are using a variation of this method.

Really to answer the question of current methods would take a text book worth, so I've tried to give an example, there really is lots out there.
coylee_17 is offline   Reply With Quote Top
Old 02-16-2012, 01:26 PM   #8
3reef Sponsor
 
TritonsGarden's Avatar
 
Join Date: Jun 2008
Location: Lawrenceburg, TN
Age: 53
Posts: 537
Skin: Classic
Karma: 4824405
TritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond reputeTritonsGarden has a reputation beyond repute


 
gallery
Default

Quote:
Originally Posted by coylee_17 View Post
I think part of the problem with the plenum system was that it didn't provide for a place anaerobic bacteria as there was constant movement through the substrate.
The way I had my under gravel filter did not have constant movement through the substrate. It was seeded initially by pumping water through it then capped and sealed. The area beneath the filter became an anaerobic zone. Worked great.
TritonsGarden is offline   Reply With Quote Top
Old 02-16-2012, 01:44 PM   #9
Fire Goby
 
coylee_17's Avatar
 
Join Date: Sep 2008
Location: Peterborough, Ontario, Can
Age: 31
Posts: 1,328
Skin: Mint
Karma: 3915301
coylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond reputecoylee_17 has a reputation beyond repute


 
gallery
Default

Quote:
Originally Posted by TritonsGarden View Post
The way I had my under gravel filter did not have constant movement through the substrate. It was seeded initially by pumping water through it then capped and sealed. The area beneath the filter became an anaerobic zone. Worked great.
I agree! Just I don't think this is how it is designed to work.
coylee_17 is offline   Reply With Quote Top
Old 02-17-2012, 06:01 AM   #10
Pajama Cardinal
 
reefnJeff's Avatar
 
Join Date: Feb 2012
Location: Saint Cloud, MN
Posts: 1,413
Skin: Mint
Karma: 7355007
reefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond reputereefnJeff has a reputation beyond repute


3reefer 
 
gallery
Default

Interesting really! So what would be the difference between the newer deep sand bed system and this system with deep layers of sand bed over the Plenum?
reefnJeff is offline   Reply With Quote Top
 

Click Here!

Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
What Makes Live rock "Good Quality?" brew0688 Live Rock 7 02-25-2010 06:27 PM
A Ton of Indo Live Rock Seized in UK Airport Matt Rogers Live Rock 15 02-04-2010 06:03 PM
Switching tanks using new live sand marlinman Sand 12 02-02-2009 08:39 AM
My Plenerific Adventures (Anecdotal Plenum Info) argan Reef Aquarium Articles and How To's 1 11-09-2008 09:09 AM
Curing Live Rock Tyslin New To The Hobby 5 01-31-2008 09:50 AM

Join 3reef Aquarium Forums