Deep sand bed and flow help?

dh350twin · 01/15/2010, 06:19 PM

Can you have a DSB and have the flow coming from the bottom up?Any body tried this?

dh350twin · 01/15/2010, 07:30 PM

bump

slief · 01/15/2010, 07:59 PM

I think one of the key elements of a DSB is the fact that it allows anaerobic (unoxygenated) bacteria to flourish. If the flow came from the bottom instead of across the surface, the bed would be oxigenated defeating one of the key elements of the DSB.

Also, should your plumbing burp, you could release all kinds of nasties into your system from the DSB. Its my understanding that they need to be left alone and a major varience in your flow could turn things upside down.. Think "death sand bed" as some refer to them as.

I am no expert in fuges or DSB's. I am in the process of designing and installing one on my system. I have on the otherhand been doing my homework & reading up so I do it right the first time.

I do think its a very good question though and will be interested to see what others have to say.

kc350twin · 01/15/2010, 10:33 PM

Along for the ride. I wonder about this as well.

Shakes · 01/16/2010, 02:44 AM

The reverse flow would not allow the proper bacteria to flourish thus negating the DSBs ability to break down nitrate. While it is possible to have the flow slow enough to utilize a reverse flow but this is an extremely slow flow that can have unintended consequences staed abve. The normal flow over the top does just fine without the reverse flow complicatons so not worth the trouble IMO

dh350twin · 01/16/2010, 11:53 PM

bumper cars

01/15/2010, 06:19 PM	#1
dh350twin Registered Member Join Date: Sep 2009 Location: kent island md Posts: 599	Deep sand bed and flow help? Can you have a DSB and have the flow coming from the bottom up?Any body tried this?

01/15/2010, 10:33 PM	#4
kc350twin Registered Member Join Date: Jan 2008 Location: Severn, MD Posts: 1,579	Along for the ride. I wonder about this as well. __________________ 112g Cube 36x36x20= Custom 12x39wPower Module (Par Monster)= Neptune Apex=ATB 840v2=BM Doser= 2 MP-40's

01/16/2010, 02:44 AM	#5
Shakes Registered Member Join Date: Oct 2009 Location: Okinawa, Japan Posts: 70	The reverse flow would not allow the proper bacteria to flourish thus negating the DSBs ability to break down nitrate. While it is possible to have the flow slow enough to utilize a reverse flow but this is an extremely slow flow that can have unintended consequences staed abve. The normal flow over the top does just fine without the reverse flow complicatons so not worth the trouble IMO __________________ Shakes 58 gallon Rimless Current Tank Info: 58 Gallon Rimless

01/15/2010, 07:30 PM	#2
dh350twin Registered Member Join Date: Sep 2009 Location: kent island md Posts: 599	bump

01/15/2010, 07:59 PM	#3
slief RC Sponsor Join Date: Sep 2009 Posts: 14,173	I think one of the key elements of a DSB is the fact that it allows anaerobic (unoxygenated) bacteria to flourish. If the flow came from the bottom instead of across the surface, the bed would be oxigenated defeating one of the key elements of the DSB. Also, should your plumbing burp, you could release all kinds of nasties into your system from the DSB. Its my understanding that they need to be left alone and a major varience in your flow could turn things upside down.. Think "death sand bed" as some refer to them as. I am no expert in fuges or DSB's. I am in the process of designing and installing one on my system. I have on the otherhand been doing my homework & reading up so I do it right the first time. I do think its a very good question though and will be interested to see what others have to say.

01/16/2010, 11:53 PM	#6
dh350twin Registered Member Join Date: Sep 2009 Location: kent island md Posts: 599	bumper cars