Light, Flow, Alkalinity

[Frop]

I just saw this. Super helpful!

 

[bif24701]

I just saw this. Super helpful!

I think this videos brings up a great conversation and some interest to some good points that need further investigation. I wouldn't say this research is flawed but certainly inconclusive, at least for me. Not enough data points, however I'm sure he is still researching and doing work on this from what I have heard.

 

[Frop]

I think this videos brings up a great conversation and some interest to some good points that need further investigation. I wouldn't say this research is flawed but certainly inconclusive, at least for me. Not enough data points, however I'm sure he is still researching and doing work on this from what I have heard.

Please share why you think it's flawed I think in watching it it's just bias to the coral he tested.

 

[bif24701]

Please share why you think it's flawed I think in watching it it's just bias to the coral he tested.

I didn't say flawed. Just not complete, yet. Some of the data points are well outside the recommended levels and not enough within the normal reef tank environment to make a conclusion.

 

[Macdaddynick1]

Please share why you think it's flawed I think in watching it it's just bias to the coral he tested.

There is a second part of the research on advancedaquarist. He talks about different types of corals and their response. I cant remember for sure but he did say some corals need more flow because of their cell membrane or something. Good read.

 

[bif24701]

There is a second part of the research on advancedaquarist. He talks about different types of corals and their response. I cant remember for sure but he did say some corals need more flow because of their cell membrane or something. Good read.

You got a link to that?

 

[Frop]

I didn't say flawed. Just not complete, yet. Some of the data points are well outside the recommended levels and not enough within the normal reef tank environment to make a conclusion.

Sorry just reread that part.

 

[bif24701]

Good reef keepers would never keep ALK as low as his lowest point nor would most keep it as high as his highest point. So what benefit is there to go from 7.5 to 10 or 11? That's about as high as most dare to go due to precipitation and other issies

 

[Frop]

Good reef keepers would never keep ALK as low as his lowest point nor would most keep it as high as his highest point. So what benefit is there to go from 7.5 to 10 or 11? That's about as high as most dare to go due to precipitation and other issies

I think getting higher and lower numbers is also good for generating the graph trendline.

 

[bif24701]

Sure, but it doesn't answer my question. The question reefers want to know. What benefit is there from 8-10 dKH?

 

[Frop]

Sure, but it doesn't answer my question. The question reefers want to know. What benefit is there from 8-10 dKH?

Going back to the trendline. And I'm not sure if it was literally just 4 coordinates to calculate but the R^2 is a .9766 so if he gave the formula we could plug in any number to find the value at any given dKh. I could probably try to calculate it on excel with the 4 points. Hopefully he used more :/

 

[bif24701]

Going back to the trendline. And I'm not sure if it was literally just 4 coordinates to calculate but the R^2 is a .9766 so if he gave the formula we could plug in any number to find the value at any given dKh. I could probably try to calculate it on excel with the 4 points. Hopefully he used more :/

He didn't, that's my point.

 

[Macdaddynick1]

You got a link to that?

I posted a link to your question about the coral growth, on another thread. That was the second part of the research.

 

[Frop]

I posted a link to your question about the coral growth, on another thread. That was the second part of the research.

Do you remember the thread name?

 

[saltyfilmfolks]

Sure, but it doesn't answer my question. The question reefers want to know. What benefit is there from 8-10 dKH?

Most folks just do it because more is better IMO. But...

Unlike the calcium concentration, it is widely believed that certain organisms calcify more quickly at alkalinity levels higher than those in normal seawater. This result has also been demonstrated in the scientific literature, which has shown that adding bicarbonate to seawater increases the rate of calcification in Porites porites.4 In this case, doubling the bicarbonate concentration resulted in a doubling of the calcification rate. Uptake of bicarbonate can apparently become rate limiting in many corals.5 This may be partly due to the fact that both photosynthesis and calcification are competing for bicarbonate, and that the external bicarbonate concentration is not large to begin with (relative to, for example, the calcium concentration).
http://reefkeeping.com/issues/2004-05/rhf/

Do you remember the thread name?

You got a link to that?

http://www.advancedaquarist.com/201...ider&utm_medium=slider&utm_campaign=clickthru

 

[nervousmonkey]

Good reef keepers would never keep ALK as low as his lowest point nor would most keep it as high as his highest point. So what benefit is there to go from 7.5 to 10 or 11? That's about as high as most dare to go due to precipitation and other issies

I keep my alk at 7.5 to 8 now for an SPS tank, a little higher for my LPS tank. I have also run alk at 11 with no severe precipitation, along with calcium at 500 and magnesium at 1600, feeding very well, not in terms of amounts, but who, how, when and where is what I mean. His data points can be used, not fun to keep them there for stability but possible.

 

[nervousmonkey]

He didn't, that's my point.

but he kept a lot of points within those average points. it's not that 53 is the only point used. That was studied significantly enough to produce the data that was produced, and so on

 

[saltyfilmfolks]

but he kept a lot of points within those average points. it's not that 53 is the only point used. That was studied significantly enough to produce the data that was produced, and so on

What is nuts though is parameters a NSW and par at full daylight Par with crazy good flow will produce beautiful corals .

 

[Frop]

I keep my alk at 7.5 to 8 now for an SPS tank, a little higher for my LPS tank. I have also run alk at 11 with no severe precipitation, along with calcium at 500 and magnesium at 1600, feeding very well, not in terms of amounts, but who, how, when and where is what I mean. His data points can be used, not fun to keep them there for stability but possible.

My nano has a consistent alk of 139ppm (7.8dKh) from HWMarinemix with my lightly expired hanna reagent.. (not sure how badly that effects the readings... i got it used) lol
but going to raise it to 8.5 or something for starters after this. Payday is today. Also getting my Seneye slides so I can finally understand my pH then I can work on improving that

 

[bif24701]

I keep my alk at 7.5 to 8 now for an SPS tank, a little higher for my LPS tank. I have also run alk at 11 with no severe precipitation, along with calcium at 500 and magnesium at 1600, feeding very well, not in terms of amounts, but who, how, when and where is what I mean. His data points can be used, not fun to keep them there for stability but possible.

At 11 my sand will clump. If you have higher organics in the water then higher ALK is possible.