Is that impossible?

[Randy Holmes-Farley]

That pictured tank may have most of its alk and calcium demand from coralline (assuming the rocks are purple with it and not for some other reason).

Coralline is quite sensitive to light levels, and often does not grow best in the brightest light.

 

[Gabbone]

Hi Randy, Are you talking about my pic or the other?

 

[Steven Garland]

I see nothing in that tank that needs a ton of light. Higher light,lower nutrients most of the times means less consumption of t/e's.

 

[Gabbone]

Ok, but we are going out of topic again. The question asked is pure scientific. I'll try to rephrase it one last time.

Can an increase in PAR lead to a partial or total reduction in alkalinity consumption?

It's not about why am I doing that or that my tank doesn't need ton of light. The point is that possible or not?

 

[Lavey29]

Ok, but we are going out of topic again. The question asked is pure scientific. I'll try to rephrase it one last time.

Can an increase in PAR lead to a partial or total reduction in alkalinity consumption?

It's not about why am I doing that or that my tank doesn't need ton of light. The point is that possible or not

Of course it can, common sense here, if something in one of the parameters is out of balance, it will affect the corals and cause stress. This will lead to reduced growth so obviously a reduction in element consumption.

 

[Gabbone]

It wasn't that hard

Thank you @Lavey29

 

[Lavey29]

It wasn't that hard

Thank you @Lavey29

But another thing to consider is the adaptive nature and survival instincts of corals. I've had corals in my tank totally dead for over 2 years come back to life recently. Did it take them that long to adapt to an environment that was not ideal because they were in a corner very low light area? One person has a certain coral in 50 par with success and another has the same coral in 150 par with success. We see this posted regularly. Did the coral just adapt to the light? Or was it the overall tank parameters and biome that made it successful? Most likely both. Each tank is unique right. You run your XR15 light on lower intensity with success. I run mine at max intensity with success. Some are successful with ULNS while others have very elevated nutrients levels and thriving tanks. So I speculate that if your overall tank biome is good and if you are testing different par levels, you may need to analyze results over a period of months. The corals may sit dormant for a period of time using no alk or cal while they acclimate to the higher par then one day start flourishing even stronger then before. A lot of very experienced reefers rarely test parameters. They just go off visual cues from the corals to let them know if they are happy or stressed.o

 

[Gabbone]

Thank you again, very interesting to read!

 

[Randy Holmes-Farley]

Hi Randy, Are you talking about my pic or the other?

I meant yours.