what is best.....

[Steve_89]

yes agreed too good to be true... I will talk to this guy again soon ... thanks for your view

Can I ask who this person is??

And what LFS he owns??

 

[koliveira]

methane? naaaaaaw

Hydrogen sulfide is the gas your looking for

taken from wikipedia

Hydrogen sulfide (hydrogen sulphide in British English), H2S, is a colorless, toxic, flammable gas that is responsible for the foul odor of rotten eggs and flatulence. It often results when bacteria break down organic matter in the absence of oxygen, such as in swamps, and sewers (alongside the process of anaerobic digestion). It also occurs in volcanic gases, natural gas and some well waters.

They CAN create these gases with the addition of organic matter ( think substrate clogged with fish ****!!)

the medium must be anaerobic and clean if you just want to have nitrogen gas as the product.

Actually methane is produced by anaerobic bacteria.. No joke! H2S is also produced..

 

[koliveira]

Article New SpringerLink BETA Version
Explore this article today!

Antonie van Leeuwenhoek
Publisher: Springer Netherlands
ISSN: 0003-6072 (Paper) 1572-9699 (Online)
DOI: 10.1007/BF00394387
Issue: Volume 40, Number 2

Date: June 1974
Pages: 285 - 295
Interrelations between sulfate-reducing and methane-producing bacteria in bottom deposits of a fresh-water lake. I. Field observations
Th. E. Cappenberg1

(1) Limnological Institute Vijverhof, Nieuwersluis, The Netherlands

Received: 17 August 1973

Abstract Observations on the seasonal periodicity in bottom deposits of Lake Vechten indicated an ecological relationship between sulfate-reducing and methane-producing bacteria. Sulfate reducers are most abundant at depths of 0 to 2 cm in the mud at pS2- values of about 11 and redox potential values of-100 to-150 mV. Maximum number of methane producers are situated at depths of 3 to 6 cm in the mud at pS2- values of about 14, redox potential values of-250 to-300 mV and maximum values of the methane concentration.
During summer stratification the numbers of bacteria increased considerably. However the number of methane producers rose much more than that of the sulfate reducers. Sulfate in the interstitial water of the sediments is reduced by the sulfate reducers and the sulfate concentration limited the latter's abundance. Methane producers are found deeper in the mud at lower concentrations of hydrogen sulphide. Therefore the different localities of the two bacterial groups may be due to sensitivity of methane producers to hydrogen sulphide. Differential counting of the mixed population of methane-producing bacteria showed that acetate-and methyl-alcohol-fermenting types are most abundant at a depth of 5, and formate-and CO2/H2-fermenting types at a depth of 3 cm in the mud.

 

[DeLgAdO]

Actually methane is produced by anaerobic bacteria.. No joke! H2S is also produced..

no i know that, but i was saying that hydrogen sulfide is the primary killer of these gases