Would it not then contribute as well to cyano then?Yes, it is but it is just as constantly taken up by corals and algae and in this way the concentration stays very low. Too low for much nitrification.
Esp as a mat is formed?
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Would it not then contribute as well to cyano then?Yes, it is but it is just as constantly taken up by corals and algae and in this way the concentration stays very low. Too low for much nitrification.
Nitrifying bacteria are also fairly unique in the marine world in that they get their entire carbon demand from CO2 where most other bacteria in the ocean are carbon limited.And nitrifiying bacteria need to get not only their nitrogen from the N-compounds as corals and algae do, the oxidation of NH4 and NO2 must fulfill their complete energy demand. Nitrifyers are chemoautotrophs.
I have to say, I've experienced mars on rock , and have seen a lot growing in very thick mats on other members rocks quite a bit.Cyanobacterial mats don´t grow best on bare rocks but prefer sediments and sand.
I have to say, I've experienced mars on rock , and have seen a lot growing in very thick mats on other members rocks quite a bit.
My assumption in several of these cases was different food sources in each case.
In my case , several at the rocks that consistently grew thick mats I removed from the system , placed in Fresh seawater w a powerhead , let soak for 24hrs and tested for Po4. No3 was not tested. Po4 was quite high on the rock.
Got it. I was naturally referring to our tanks. There are a lot more mechanisms for cleaning in the wild. Animals , weather etc.I was talking on the rocks in reefs. I think sediments and gravel are a more disturbed environment and cyanobacteria can settle there easier. The typical reef rock is covered by corals and algae and grazed by parrotfish. I think it is less likely that cyano mats will grow on reef rocks.
You can´t transfer much nitrate with a rock because nitrates are water soluble and stay in the water while much of the phosphate is bound to rock and gravel and can be transferred with a rock quite easily and efficiently. In fresh saltwater some of the phosphate will dissolve from the rock and appear when tested for phosphate.
Climate is systemic while weather is local.So oft times it's not a systemic mechanism so much as a localized one.
I was referring to cyano growth.Climate is systemic while weather is local.
I'm thinking bacteria only care about the weather, not the climate!
This highlights the problems with water tests. It only provides a snapshot of that specific parameter in the water at that specific time. This is why I typically have 0 to5ppm NO3 and 0.00-0.05 phosphates yet I feel I run a high nutrient system. Lots of food in, lots of algae out.
I'll need to look at it more, but I don't believe so.
http://www.sciencedirect.com/topics/agricultural-and-biological-sciences/nitrifying-bacteria
From the linked report.
"Obligate autotrophs obtain energy exclusively by the oxidation of inorganic substrates and use carbon dioxide as the only resource of carbon, such as the nitrifying bacteriaNitrobacter winogradskyi (oxidizing nitrite ion), and Nitrosomonas europaea and Nitrosococcus oceani (oxidizing ammonium ion)."
If the CO2 content get so high that the pH goes down below 6.8 - the nitrification stops.
I belive they need o2 not co2.I wish I had your guys experience and expertise. I just do my best trying to learn from reading.
I have read a few studies that discuss how low pH causes nitrification to slow and/or stop but none of them address the cause of the stoping. I'm wondering if that is a different mechanism than the actual CO2 content. I wouldn't think even a relatively large population of nitrifying bacteria would consume much CO2. Certainly not enough to change pH.
I belive they need o2 not co2.
That's what happens in nopox od. It sucks the o2 out of the tank.
High co2, low ph , low o2.
I have to say that the more I look into this the more confused I am becoming. The article (and a few others I could link if you want) was definitely referring to CO2 since it was talking about carbon uptake. I think I need to do more studying on how other marine bacteria, like cyano, uptake carbon. Maybe it will make more sense.I belive they need o2 not co2.
That's what happens in nopox od. It sucks the o2 out of the tank.
High co2, low ph , low o2.
So you are saying they don't need oxygen? And don't put out co2?Its not a question of O2. I have (and still do) run nitrification filters that get 40 cubic meters of air/h (for 20 m3 water/h) Oxygen level at the outlet 100% saturation. As soon the pH drops below 6.6-6.8 nitrification rate goes down. To have it works all the time – we have a pH meter in the outlet – as soon is below 7 – we dose HCO3 in the inlet. These filters (around 5 m3) can handle 30 kg of fish pellets a day with NO2 levels at the outlet very low. The CO2 levels is also very low because of the heavy aeration
Sincerely Lasse
So you are saying they don't need oxygen? And don't put out co2?