Micro algae’s blooms in aquaria are directly connected to a CNP limitation.

[sixty_reefer]

Im a strong believer that all blooms in aquaria are directly connected to a limitation in heterotrophic denitrifying bacteria for the 3 essential nutrient they need. This limitation increases the availability of nitrogen available for many micro algae’s to bloom if trace elements are in good balance.

I’m open to hearing a different perspective.

 

[Randy Holmes-Farley]

What is the evidence? What about the tanks with plenty of nitrate and phosphate and trace element additives that do not experience that?

 

[Randy Holmes-Farley]

Example:

Rich Ross - Home Tank - guess the phosphate

This tank was built before r2r, here is a link to some links about the build. http://packedhead.net/home-reef/ Current test results: 03-17-2017 Ammonia (NH3-4) Good 0 0.000 - 0.050 mg/L 03-17-2017 Nitrite (NO2) Good 0.006 0.000 - 0.100 mg/L 03-17-2017 Phosphate...

www.reef2reef.com

 

[sixty_reefer]

What is the evidence? What about the tanks with plenty of nitrate and phosphate and trace element additives that do not experience that?

if they don’t experience it, they will have a healthy denitrification system in place that is not limited in any of the tree nutrients that this bacteria needs.
His he having micro algae bloom issues?

 

[Randy Holmes-Farley]

if they don’t experience it, they will have a healthy denitrification system in place that is not limited in any of the tree nutrients that this bacteria needs.
His he having micro algae bloom issues?

No, and most people do not despite having plenty of nutrients.

 

[sixty_reefer]

No, and most people do not despite having plenty of nutrients.

I’m not sure if I’m understanding you question, I’m not saying high nutrient cause micro algae blooms, what I’m saying is that micro algae tends to bloom in conditions were nitrifying bacteria has one of the tree nutrients that they need to work is limited, they don’t just require nitrate and phosphate to complete the denitrification cycle.

 

[Randy Holmes-Farley]

I’m not sure if I’m understanding you question, I’m not saying high nutrient cause micro algae blooms, what I’m saying is that micro algae tends to bloom in conditions were nitrifying bacteria has one of the tree nutrients that they need to work is limited, they don’t just require nitrate and phosphate to complete the denitrification cycle.

OK, I did misunderstand.

What is the rational for thinking there will be an algae bloom when nitrifying bacteria are limited, and what limitation limits them but not microalgae?

 

[sixty_reefer]

OK, I did misunderstand.

What is the rational for thinking there will be an algae bloom when nitrifying bacteria are limited, and what limitation limits them but not microalgae?

if a evaluation is done post bloom is often seen as a direct result of a limitation in denitrifying bacteria.

Pre bloom we won’t be able to determine which organisms will bloom due to every tank being different.

 

[Randy Holmes-Farley]

if a evaluation is done post bloom is often seen as a direct result of a limitation in denitrifying bacteria.

How does one show that?

 

[sixty_reefer]

How does one show that?

Post bloom we already observed the limitation in phosphate and/or Nitrate as being responsible for it.
The third connection to denitrification comes from this blooms also be observed in high Nitrate and Phosphate that are a indicator of low to depleted systems in organic carbon post bloom.

I suspect that this is why @Beuchat method works for some but not for all.

 

[Randy Holmes-Farley]

Post bloom we already observed the limitation in phosphate and/or Nitrate as being responsible for it.
The third connection to denitrification comes from this blooms also be observed in high Nitrate and Phosphate that are a indicator of low to depleted systems in organic carbon post bloom.

I suspect that this is why @Beuchat method works for some but not for all.

What measurement tells you that nitrifiers are limited? I’m not aware of any.

 

[Dan_P]

Post bloom we already observed the limitation in phosphate and/or Nitrate as being responsible for it.

This is a post hoc fallacy.

In this hobby, depleted nitrate or phosphate is assumed to be the cause of benthic nuisance algae blooms in new systems but has never been proven to be the cause, though it might be a contributing factor.

The third connection to denitrification comes from this blooms also be observed in high Nitrate and Phosphate that are a indicator of low to depleted systems in organic carbon post bloom.

So blooms are caused by depleted nitrogen or phosphorous unless there is plenty of nitrogen and phosphorous, then the cause is depleted organic carbon.

I think you are arguing that the activity of denitrifying bacteria is not relevant to the bloom.

 

[sixty_reefer]

What measurement tells you that nitrifiers are limited? I’m not aware of any.

Sorry did you meant to say denitrifiers?

 

[sixty_reefer]

This is a post hoc fallacy.

In this hobby, depleted nitrate or phosphate is assumed to be the cause of benthic nuisance algae blooms in new systems but has never been proven to be the cause, though it might be a contributing factor.



So blooms are caused by depleted nitrogen or phosphorous unless there is plenty of nitrogen and phosphorous, then the cause is depleted organic carbon.

I think you are arguing that the activity of denitrifying bacteria is not relevant to the bloom.

Do this 3 nutrients affect the efficiency of denitrification?

Can we have denitrification without one of the 3?

For denitrification is best to just mention nitrate and phosphate.

 

[Dan_P]

Do this 3 nutrients affect the efficiency of denitrification?

Can we have denitrification without one of the 3?

For denitrification is best to just mention nitrate and phosphate.

Maybe I wasn’t be clear.. What is the mechanism linking the growth of heterotrophic denitrifyers and benthic micro algae when the latter can grow prolifically under repleted or depleted nitrogen and phosphorous?

 

[sixty_reefer]

Maybe I wasn’t be clear.. What is the mechanism linking the growth of heterotrophic denitrifyers and benthic micro algae when the latter can grow prolifically under repleted or depleted nitrogen and phosphorous?

Post bloom, after the denitrifying bacteria died or go dormant due to limitations, the micro algae will become the main organism controlling nutrients.

 

[Randy Holmes-Farley]

Sorry did you meant to say denitrifiers?

I’ve been reading the thread as nitrifiers, but all of my questions would apply to denitrifiers. I don’t know how any measurements we do can correlate them with blooms.

 

[Dan_P]

Post bloom, after the denitrifying bacteria died or go dormant due to limitations, the micro algae will become the main organism controlling nutrients.

This statement makes at least two unfounded assumptions: heterotrophic nitrifyers can only use one type of nitrogen and no other microorganism consumes nitrogen and phosphorous.

 

[sixty_reefer]

This statement makes at least two unfounded assumptions: heterotrophic nitrifyers can only use one type of nitrogen and no other microorganism consumes nitrogen and phosphorous.

Im not sure if I understand your point well.

 

[Dan_P]

Im not sure if I understand your point well.

What is the evidence that denitrifying bacteria die or go dormant or even influenced the growth of micro algae?