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Randy:
I did make some additions of K about a month ago, without any testing. Was told adding K improves color of corals so I had to try it. I didn't see any visible difference.
I also add about 5ml is Silica lately to see if there is any impact on sponge growth and to increase diatom growth the could be skimmed off to improve the nutrient transport.
Sanjay
How does phosphorous inter the aquarium. I thought phosphorous and phosphate were the same except one was organic and the other was something else. Can anyone explain the to me?
Gene
Pho
Randy:
I did make some additions of K about a month ago, without any testing. Was told adding K improves color of corals so I had to try it. I didn't see any visible difference.
I also add about 5ml is Silica lately to see if there is any impact on sponge growth and to increase diatom growth the could be skimmed off to improve the nutrient transport.
Sanjay
The value for "P" will include both inorganic and organic forms of phosphate. The organic forms are things like DNA, proteins, phospholipids, etc).
The value for "PO4" is just inorganic phosphate.
The few sets of data I have seen did not indicate much organic P since inorganic phosphate accounted for most or all of the total P. Sanjay's case looks to be close to that being true as well. FWIW, 0.07 ppm phosphate (Sanjay's value) equates to 22.9 ug/L total P. His data suggested 24.3 ug/mL. That is probably within the error of the measurements of being the same, but might reflect a bit of organic P.