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06/09/2021, 04:36 PM | #1 |
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Join Date: Sep 2013
Location: MN
Posts: 2
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Po4 level
What PO4 level do we need to be below eliminate Cyanobacteria in a reef tank?
Thanks Lou |
06/10/2021, 06:46 AM | #2 |
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Join Date: Jul 2010
Location: Austin, TX
Posts: 1,985
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Sorry, but there's no such number. Keeping it too low (below .03 mg/l) will have a negative impact on coral's photobiology potentially causing bleaching and death. Upwelling will expose corals to levels as high as .2 mg/l so somewhere between those numbers is probably what's best. (Research shows higher levels increase growth rates but also can make skeletons more brittle.) Here's some links if you want to look into the roles of organic and inorganic (PO4) phosphorus in reef systems:
Richard Ross What's up with phosphate" https://youtu.be/ZRIKW-9d2xI Forest Rohwer "Coral Reefs in the Microbial Seas" https://www.youtube.com/watch?v=-R2BMEfQGjU Changing Seas - Mysterious Microbes https://www.youtube.com/watch?v=c7hsp0dENEA Nitrogen cycling in hte coral holobiont https://youtu.be/DWItFGRQJL4 BActeria and Sponges https://www.youtube.com/watch?v=-oLDclO7UcM https://www.cambridge.org/core/journ...D254623FD3C7C# An Experimental Mesocosm for Longterm Studies of Reef Corals Phosphate Deficiency: Nutrient enrichment can increase the susceptibility of reef corals to bleaching: https://www.nature.com/articles/nclimate1661 Ultrastructural Biomarkers in Symbiotic Algae Reflect the Availability of Dissolved Inorganic Nutrients and Particulate Food to the Reef Coral Holobiont: https://www.frontiersin.org/articles...015.00103/full Phosphate deficiency promotes coral bleaching and is reflected by the ultrastructure of symbiotic dinoflagellates https://www.sciencedirect.com/scienc...601?via%3Dihub Effects of phosphate on growth and skeletal density in the scleractinian coral Acropora muricata: A controlled experimental approach https://www.sciencedirect.com/scienc...22098111004588 High phosphate uptake requirements of the scleractinian coral Stylophora pistillata http://jeb.biologists.org/content/214/16/2749.full Phosphorus metabolism of reef organisms with algal symbionts https://esajournals.onlinelibrary.wi...Vm0sG8_0vth6lq https://therichross.com/skeptical-re...and-phosphate/ Sponge symbionts and the marine P cycle https://www.pnas.org/content/112/14/4191 Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges https://www.pnas.org/content/112/14/4381
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"Our crystal clear aquaria come nowhere close to the nutrient loads that swirl around natural reefs" Charles Delbeek |
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