Not hurt but have you seen dosing iron as helping GHA and other greens not wanted. I'm dosing ChaetoGro to promote Pom Pom but not sure how that's affecting GHA. Mostly because I've been dosing hydrogen peroxide which does seem to be negatively affecting GHA and to some extent Pom Pom although that is relative to GHA flourishing. Based on my limited time doing this. Can't conclude if adding iron encourages GHA although don't see how I get around not dosing that if I want Pom Pom. Just trying to see how you've seen GHA respond when you were purposely trying to promote chaeto.
With so many systems requiring NO3 dosing I wouldn’t be surprised to see trickle filters make a comeback. Rapid conversion of ammonia to nitrate.
Recall in the early days of the Berlin Method those being called Nitrate Factories. One of those what the heck moments as if that's a bad thing
Not really a surprise if noone tries ...
pubmed.ncbi.nlm.nih.gov
So the answer is no, there is no support for this statement:
That seems rude and unnecessary, especially when you are sharing your opinions, and forces me to squint at your advice/opinions, and the claims about products your company sells.
So does almost everyone else participating in this discussion. Ideas are great. Stating them as fact, not so much.
Yet you keep sharing your opinions. That seems like a double standard.But, as you say, you don’t care.
At the moment I am not thinking much about N dosing since I don't do N experiments and so I just don't dose it. I can see in coral colors and algal growth when I feed more to the fish or when during holidays someone fed more than I usually feed. For me that's sufficient to regulate N nutrition in the tanks.
Yes, of course zooxanthellae can use nitrate. If they wouldn't, nitrate just wouldn't cause any harm to corals. The problem of oxidative stress occurs in corals when nitrate is available and other nutrients are scarce. The zooxanthellae assimilate nitrate, producing reactive oxygen species ROS which cause bleaching and burning tissue at the most light exposed sites. Low phosphate concentration inhibits repair mechanisms. Corals get harmed and may die.
In general science is not conceived as opinion.
Where? The articles I link are science. Then I have own observations and measurements, and if I draw conclusions I can't prove from these observations I usually mark it as opinion by "in my eyes" or "I think" or similar.
What point exactly is annoying you? Concluding from your reactions there is some fact or opinion you don't want to accept and that is causing you coginitive dissonance.
Hi Randy,
Iodine is indeed difficult to measure, but its very do-able when a suitable protocol is followed.
Here is the reasons:
1) When someone trained in trace metal analysis would apply his procedures to iodine, he would get likely fairly random numbers - there is special factors regarding sample handling and measurement that need to be in place for reliable iodine measurements.
2) for ICP-OES: Iodine has not very intense emission lines on most spectrometers, so sensitivity is not very good (but sufficient)
3) the most common (and intense) emission line at 187 nm is suffering from phosphorus interference. For this reason we cannot quantify iodine on our ICP-OES when the phosphorus level is high
4) ICP-MS is way superior for iodine determination since there is no interferences - also the detection limit is well below 1 µg/l.
There is plenty of publications regarding iodine analysis using ICP-MS (and also OES), so it can definitely be done.
for example:
Determination of urinary iodine by inductively coupled plasma mass spectrometry - PubMed
The ICP-MS method described here is fast, accurate and specific for the quantification of urinary iodine. Compared to the S-K method the urinary iodine concentrations measured by the ICP-MS method were slightly, but significantly lower. Consequently, the results of studies using S-K method...
Best regards,
Christoph
