Deep sand bed methodology

[kkiel02]

I think mine was $20 to make. Super easy if I did it.

[rrasco]

You need an anerobic zone (low oxygen content) for denitrifying purposes so, imo, 2 inches of LR rubble below the sand bed would destroy that zone. 5 inches of sand, no rubble, imo, would work best. The idea, as I understand it, is to keep from using too fine of a sand, or too deep of a bed, in order to prevent an anoxic zone (no oxygen content) from forming underneath the anerobic zone.

Are you sure that is correct? I'm of the understanding denitrification only occurs in anoxic zones. Anaerobic is the biological reaction of organisms living in anoxic zones.

I agree about using sand and not rubble. Good live rock (read: very porous) can also provide many anoxic areas for denitrification to occur. This won't occur in rubble like it would a nice piece of LR.

[rrasco]

Oh, and I have made a few ATS. They are cheap if you have pumps and PVC laying around like I did. Less than an hour to build. I'll keep my feedback regarding them for the ATS thread.

[ramsey]

I would never consider adding any measurable amount of sand that could be collected by those means off of the Texas coast. Out beaches are brown for a reason. The water flows from the Mississippi River through the deltas of Louisiana. All that sediment and waste from this influx spreads along our coastline.


-Ben-

Not to mention the risk of undesirables in the sand.

[Scutterborn]

Oh, and I have made a few ATS. They are cheap if you have pumps and PVC laying around like I did. Less than an hour to build. I'll keep my feedback regarding them for the ATS thread.

Gracias! I'll likely create that thread sometime this weekend to avoid detracting from this one.


-Ben-

[CoryDude]

The Joubert method has been around for almost twenty years. There's a reason it isn't more popular.

Or, you can package up a dsb into a reactor and run a denitrator like me. It's way more efficient that way.

[jcnkt_ellis]

Are you sure that is correct? I'm of the understanding denitrification only occurs in anoxic zones. Anaerobic is the biological reaction of organisms living in anoxic zones.

I agree about using sand and not rubble. Good live rock (read: very porous) can also provide many anoxic areas for denitrification to occur. This won't occur in rubble like it would a nice piece of LR.

I may have been slightly off on terminology, but since pictures work best for me with how DSBs work here is what I was refering to:




The yellow and black caution bar represents the 6" mark in DSBs, I believe.

[rrasco]

I may have been slightly off on terminology, but since pictures work best for me with how DSBs work here is what I was refering to:

The yellow and black caution bar represents the 6" mark in DSBs, I believe.

No worries, just making sure we are providing accurate information is all. I verified my statement before I posted it to make sure I understood things correctly. LOL

[Paul28]

I may have been slightly off on terminology, but since pictures work best for me with how DSBs work here is what I was refering to:




The yellow and black caution bar represents the 6" mark in DSBs, I believe.

thats a nice pic of it love the yard gnomes cleaning out the hydrogen sulfide dead spot haha

[BBQHILLBILLY]

very nice indeed like the pic