has any one ever heard of this

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I

Istfensarion

Feeder Fish
MFK Member
Feb 10, 2011
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Belleville, IL
So when my son was at the Hospital i was looking at some of the crappy hospital tanks. and noticed that some of them looked amazing and some look rancid. I ran into on of the guys maintaining them and started probing him with questions. I learned that they were a new company taking over from the people who let the tanks go and we started talking about filtration and stuff. The owner later joined the convo and mentioned something called deep sand filtration according to him if u use a deep sand bed and run water over it after time a bacteria will grow that eats the Nitrates and releases somthing that will just gas off and let your system equize it self and you won't have to do water changes nearly as much any one heard of that?

Thanks in advance
Lawrence
 
I believe he is referring to anaerobic bacteria that convert nitrate to N2 gas. Sand is dense enough that it doesn't allow much water to flow through it, thus setting up an anaerobic environment where these bacteria thrive.
In most filters there is constantly large amounts of oxygenated water passing over the biomedia, which allows the bacteria to thrive that convert ammonia-->nitrite-->nitrate, but inhibit the growth of the anaerobic bacteria that would then convert nitrates to N2 gas.

This is the principle behind some biomedia like SeaChem's Matrix and DeNitrate. This media has deep channels where there is very little water penetration, creating and anaerobic environment for growth of the bacteria that convert nitrate to N2 gas.
 
great thanks for the reply so. Does any one know how you would go about making one or could you just make a seperate section in a sump to do this? and would sand be a good way for this to work?
 
calioutlaw1a;4919124; said:
I believe he is referring to anaerobic bacteria that convert nitrate to N2 gas. Sand is dense enough that it doesn't allow much water to flow through it, thus setting up an anaerobic environment where these bacteria thrive.
In most filters there is constantly large amounts of oxygenated water passing over the biomedia, which allows the bacteria to thrive that convert ammonia-->nitrite-->nitrate, but inhibit the growth of the anaerobic bacteria that would then convert nitrates to N2 gas.

This is the principle behind some biomedia like SeaChem's Matrix and DeNitrate. This media has deep channels where there is very little water penetration, creating and anaerobic environment for growth of the bacteria that convert nitrate to N2 gas.
Click to expand...

Well said!
 
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