one more dsb question

Neal359 · 05-23-2001, 10:25 PM

i have looked but never realy goten the answer that i am looking for it it posible to start a dsb in a reef tank that is already up and runin (tank going on its second year) i dont want to start some typ of cycel in my already established tank

Elmo18 · 05-23-2001, 10:59 PM

Neal,

What do you have in the tank for substrate right now?

Regards,
Ilham

Neal359 · 05-23-2001, 11:40 PM

i have agronite. i was told that if i mix the 2 it could turn into a cement.

[This message has been edited by Neal359 (edited 05-24-2001).]

Neal359 · 05-24-2001, 11:02 PM

Elmo18 · 05-24-2001, 11:31 PM

Neal359,

So if I'm right, you would like to put more aragonite in or put Southdown Sand, or silica sand for the new DSB?

I've heard about deep sand bed hardening, but that's because there aren't enough polychaete (help me out Ninong) worms to stir up the sand. The concept of a DSB rely on it being LIVE, meaning there must be sandbed fauna that will eat off detritus and then in turn stir up the sand.

I believe as long as you have that, the sand bed shouldn't turn hard.

Regards,
Ilham [img]/ubb/smile.gif[/img]

**SPasse** · 05-25-2001, 10:00 AM

Hi All,

The substrate hardening issue is a condition for which I think there are two separate mechanisms.

1 Bacteria gluing the substrate together in sand that contains little or no fauna to keep the sand “mixed up” This is the mechanism that is talked about by Dr. Ron and Rob Toonen. This condition would probably effect both calcareous and non-calcareous sediments.

2 Chemical fusing caused by a combination of high water alkalinity, and/or also low magnesium levels.

Any conversion to a DSB should be accompanied by and immediate introduction of one or more sand bed fauna kits to prevent scenario #1 from occurring.

A “dead” DSB is a recipe for sand bed fusing.

Regards,

Scott

------------------
The definition of an expert is a washed-up drip under pressure.
You can see my reeftank at http://www.homestead.com/spasse/

05-24-2001, 11:02 PM	#4
Neal359 Mayor Join Date: Dec 2000 Location: richmond Posts: 558	^^

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05-23-2001, 10:25 PM	#1
Neal359 Mayor Join Date: Dec 2000 Location: richmond Posts: 558	one more dsb question i have looked but never realy goten the answer that i am looking for it it posible to start a dsb in a reef tank that is already up and runin (tank going on its second year) i dont want to start some typ of cycel in my already established tank

05-23-2001, 10:59 PM	#2
Elmo18 Governor Join Date: Feb 2001 Location: Seattle, WA Posts: 1,514	Neal, What do you have in the tank for substrate right now? Regards, Ilham

05-23-2001, 11:40 PM	#3
Neal359 Mayor Join Date: Dec 2000 Location: richmond Posts: 558	i have agronite. i was told that if i mix the 2 it could turn into a cement. [This message has been edited by Neal359 (edited 05-24-2001).]

05-24-2001, 11:31 PM	#5
Elmo18 Governor Join Date: Feb 2001 Location: Seattle, WA Posts: 1,514	Neal359, So if I'm right, you would like to put more aragonite in or put Southdown Sand, or silica sand for the new DSB? I've heard about deep sand bed hardening, but that's because there aren't enough polychaete (help me out Ninong) worms to stir up the sand. The concept of a DSB rely on it being LIVE, meaning there must be sandbed fauna that will eat off detritus and then in turn stir up the sand. I believe as long as you have that, the sand bed shouldn't turn hard. Regards, Ilham [img]/ubb/smile.gif[/img]

05-25-2001, 10:00 AM	#6
SPasse Moderator Join Date: Mar 2000 Location: Forney Texas USA Posts: 2,304	Hi All, The substrate hardening issue is a condition for which I think there are two separate mechanisms. 1 Bacteria gluing the substrate together in sand that contains little or no fauna to keep the sand “mixed up” This is the mechanism that is talked about by Dr. Ron and Rob Toonen. This condition would probably effect both calcareous and non-calcareous sediments. 2 Chemical fusing caused by a combination of high water alkalinity, and/or also low magnesium levels. Any conversion to a DSB should be accompanied by and immediate introduction of one or more sand bed fauna kits to prevent scenario #1 from occurring. A “dead” DSB is a recipe for sand bed fusing. Regards, Scott ------------------ The definition of an expert is a washed-up drip under pressure. You can see my reeftank at http://www.homestead.com/spasse/

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