imarkspeed
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so what brand is best ? or how do i get (AA)
<a href=showthread.php?s=&postid=15717488#post15717488 target=_blank>Originally posted</a> by chark
Zedar, How much KNO3 did you dose and how?
<a href=showthread.php?s=&postid=15717488#post15717488 target=_blank>Originally posted</a> by chark
Zedar, How much KNO3 did you dose and how?
<a href=showthread.php?s=&postid=15717353#post15717353 target=_blank>Originally posted</a> by imarkspeed
so what brand is best ? or how do i get (AA)
<a href=showthread.php?s=&postid=15717891#post15717891 target=_blank>Originally posted</a> by Michael7979
One teaspoon ......for how much water volume?
<a href=showthread.php?s=&postid=15712871#post15712871 target=_blank>Originally posted</a> by acrylic_300
They also need nitrate to grow and nitrate causes much less of a problem than phosphate.
I haven't used nitrate but I can see the potential it would have on growth and color....especially if I am over skimming, my levels are undetectable, and cyano is showing up.
<a href=showthread.php?s=&postid=15718973#post15718973 target=_blank>Originally posted</a> by stony_corals
THEY DO NOT NEED NO3 TO GROW!!! They need N (do you know the difference?), which can be provided in many ways. I have run ZEO and vodka for many years, and despite having large skimmers, and low nutrients, I didn't have cyano. There's definitely a time and a place for dosing sources of N (aminos, KNO3, add'l feeding), but they should only be done when appropriate. Hobbyists look for too many "silver bullets", and when there are a plethora of half-truths, understanding effects of doing something may not be a causal relationship.
<a href=showthread.php?s=&postid=15719384#post15719384 target=_blank>Originally posted</a> by acrylic_300
Sorry, I was wrong and you're absolutely correct. It actually slows their growth.
So now I'm digging deep to figure out why corals stop growing and turn pale without Nitrate in a reef tank.
1. zooxanthelle use it.
2. phytoplankton use it.
This an article explaining why the Nitrate slows calcification:
A model is presented which suggests that the diffusion-limited supply of CO2 from surrounding seawater is used preferentially by the enlarged zooxanthellae population for Photosynthesis, thereby reducing the availability of inorganic carbon for calcification.
Here is the article: http://icb.oxfordjournals.org/cgi/content/full/45/4/595
Basically nitrate causes the zooxanthellae to increase and starve the coral of CO2.
So why are people getting results dosing Nitrate? I haven't tried dosing Nitrate, but I truly believe people are getting results.
I'm embarrassed that I gave false information....it was a bad assumption on my part. Corals do not need Nitrate.
However, (I think) some of the organism that corals eat need nitrate to survive.
I don't think we can totally dismiss that adding nitrate may give the corals better growth under certain circumstances and comparatively it causes less problems than phosphate.
<a href=showthread.php?s=&postid=15719965#post15719965 target=_blank>Originally posted</a> by Marklu
I have read that article about nitrate as well, and I don't know enough about coral biology/chemistry to know why this has helped certain individuals when articles such as this one suggest nitrate to be detrimental in any amount. Perhaps the absence of live food (zooplankton) in a sterile system is problematic. Why no3 fixed these problems, i don't know. I toyed with the thought of dosing for a long time before I actually did. I read up on it and I am certainly not the first to do it. But for some reason it seems to have helped my corals. Also, I used to have zero coraline algae due unsuitable/imbalanced nutrients (my assumption), and now I do! I think it may not be the actual uptake of nitrate that is helping, but putting nutrient levels back into the correct, possibly more natural proportions that is allowing things to grow or prevent inhibition of calcification due to po4. Has there been any studies on the effect of phosphate on calcification with varying nitrate levels? Perhaps phosphates at any concentration can become detrimental if they are not balanced with no3. But i am just rambling here, somebody more knowledgeable then I should chime in.