Help Prevent Involuntary SPS Slaughter

[MrNYCeGuy]

Could this also be Vibrio bacteria? Reading how this can attack a tank and cause STN in quite a few corals.

 

[Hermie]

These are very interesting articles. It’s seems like the presence of algae in reef environments can outcompete corals for the necessary nutrients. In our display tanks where we can increase and decrease the presence of these elements, is the presence of algae in a refugium a net negative? Also, if that algae can be harvested and removed from the system, should we get the benefits of nutrient removal without the downside effects? Is there anything else that would cause algae to inhibit coral growth (ie. toxin release) other than the reduction of nutrients and elements? This would be great to understand.

that's what the article's abstract answers, specifically

Here, we show that algae can indirectly cause coral mortality by enhancing microbial activity via the release of dissolved compounds.

 

[ScottB]

Can someone with chemistry or ICP experience help out in my phosphorus question to benefit @MrNYCeGuy ?

So his ICP test came back with .08 of phosphorus in PPM. When I use a Hanna Phosphorus ULR, in order to convert it to Phosphates, I would multiply that value by 3.0661 and then divide by 1000.

I don't know how this compares to ICP Phosphorus measures, but using that math would imply virtually zero PO4, which in my tanks would mean dead/dying acropora.

Seems somewhat at odds with a high nitrate test, so I am doubting myself.

@MrNYCeGuy can you get a Hanna test for PO4 just to confirm?

 

[MrNYCeGuy]

Can someone with chemistry or ICP experience help out in my phosphorus question to benefit @MrNYCeGuy ?

So his ICP test came back with .08 of phosphorus in PPM. When I use a Hanna Phosphorus ULR, in order to convert it to Phosphates, I would multiply that value by 3.0661 and then divide by 1000.

I don't know how this compares to ICP Phosphorus measures, but using that math would imply virtually zero PO4, which in my tanks would mean dead/dying acropora.

Seems somewhat at odds with a high nitrate test, so I am doubting myself.

@MrNYCeGuy can you get a Hanna test for PO4 just to confirm?

Hey @ScottB I use Salifert test kits and my PO4 is at .10 ppm which would fall in line with the ICP test of .08 ppm. Does that help answer your question?

 

[MrNYCeGuy]

that's what the article's abstract answers, specifically

Ah must have overlooked that as I was at my flag football game when I responded. Probably should have reviewed that a bit closer. Thanks for pointing that out!

 

[Hermie]

Ah must have overlooked that as I was at my flag football game when I responded. Probably should have reviewed that a bit closer. Thanks for pointing that out!

it's really interesting too isn't it haha, wish I could get the full article not just the abstract

 

[MrNYCeGuy]

So after doing some research I and finding this thread, it sounds a lot like the issues that I am having.

Hidden Threats - Real and Perceived (Pathogenic Bacteria)

For the last several months I have had a slowly progressing issue in a frag tank that houses my frags, colonies and livestock from a tank that was shutdown from moving. This tank has been setup for a couple of years while a much larger DT is being built. While waiting, I have been testing...

www.reef2reef.com

Leaning more towards a bacterial issue via diagnosis of exclusion. @Dennis Cartier have any wisdom you could share about your experience?