Caliban07
Aquarium Advice Addict
They do indeed both exist. The link you shared accounts for one of the COMAMMOX studies and they indicate that COM.nitrospira seem to prefer acidic mediums. These are recently discovered strains and discounts Ammonia Oxidising Archaea (AOA)The information that spawned the whole idea that low pH stalls nitrification was centred around ammonia oxidising bacteria (AOB) I remember the article but can’t seem to find it but it was from one of the earlier Fritz products. I’ve no doubt that pH has implications with the specific strains as discussed in that article but it isn’t inaccurate to then say that pH will stall nitrification.
What I take home from all the studies discussed in the link I provided is that new information is emerging on nitrifying organisms all the time. Yesterday we were talking about nitrosomanas and nitrobacter then we discovered Archaea and now COMAMMOX nitrospira. Who knows what will come tomorrow.
The other things of note is that all
These microbes will grow in certain niches under certain environments and as the environment changes then so too will the organisms which includes the nitrifiers.
l don’t see any information that suggests nitrification stops at low pH levels. If the starting point is X and becomes Y, X organism will be replaced by Y. The aquarium filter therefore is diverse and ever changing so my thoughts are that we should be thinking a bit more carefully before we make a statement such as pH stalling nitrification. We are in danger of regurgitating outdated information. Is it possible? It seems that way depending on the microbes we are talking about but its it really likely? I just don’t think it is given that the recent strains discovered operate under low oxygen conditions and have the ability to use co2 as an energy source.
Acidity, low oxygen, ammonium and co2 are all traits of a low pH environment and it is within these environments where these recently discovered nitrifiers are being studied.
What I take home from all the studies discussed in the link I provided is that new information is emerging on nitrifying organisms all the time. Yesterday we were talking about nitrosomanas and nitrobacter then we discovered Archaea and now COMAMMOX nitrospira. Who knows what will come tomorrow.
The other things of note is that all
These microbes will grow in certain niches under certain environments and as the environment changes then so too will the organisms which includes the nitrifiers.
l don’t see any information that suggests nitrification stops at low pH levels. If the starting point is X and becomes Y, X organism will be replaced by Y. The aquarium filter therefore is diverse and ever changing so my thoughts are that we should be thinking a bit more carefully before we make a statement such as pH stalling nitrification. We are in danger of regurgitating outdated information. Is it possible? It seems that way depending on the microbes we are talking about but its it really likely? I just don’t think it is given that the recent strains discovered operate under low oxygen conditions and have the ability to use co2 as an energy source.
Acidity, low oxygen, ammonium and co2 are all traits of a low pH environment and it is within these environments where these recently discovered nitrifiers are being studied.
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