<a href=showthread.php?s=&postid=7825221#post7825221 target=_blank>Originally posted</a> by Flint&Eric
... Thanks for all the articles you've been posting on the other forum...it's nice to get a decent idea of what is actually going on with some of these products...Some of the articles certainly are over my head ... but i feel i have learned a lot from them. ...
You're quite welcome ... less than a dozen people actually few my typical posts, and it's nice to talk to some of them! Don't worry about the difficulty level ... some of it's pretty heavy reading. I'm a biologist, and I have to re-read them at least twice to be sure that I'm understanding them properly.
Your questions indicate you're doing just fine ... :thumbsup:
<a href=showthread.php?s=&postid=7825221#post7825221 target=_blank>Originally posted</a> by Flint&Eric
... You posted a link to the freshwater redfield calculator...do you feel this can be modified and applied to Reef tanks?...
Without knowing the equations and conversions they're using, I'd have to say that there's a possibility for some serious errors.
With the proper modifications, I don't see any reason that it couldn't be applied to reef tanks. If we knew the identity of the carbon source that is being dosed, and were willing to specify an "acceptable error" in terms of "actual" phosphorous concentration, I don't see any reason that such a calculator couldn't be created for reef systems. Since the "Redfield Ratio" is merely a C:N:O

ratio, I don't see any conceptual difficulties ... the problem is what kind of percentage error we'd be willing to accept.
<a href=showthread.php?s=&postid=7825221#post7825221 target=_blank>Originally posted</a> by Flint&Eric
... What are examples of amide-sugars? Is acetate now out of the question due to Nitrite accumulation?....if that is the case what about the other two that were mentioned valerate or caproate? ...
Glucosamine is a good example ... there are a few others which have been applied in marine experimentation. I suggest amino sugars (AKA amide sugars) because they're oftentimes precursors which can be utilized in the synthesis of proteins and lipids ... i.e., more "utility" than either ethyl alcohol or sugars (such as glucose)
in certain important metabolic pathways.
But be forewarned ... amino sugars oftentimes naturally occur with a phosphate molecule associated with them (as in the case of glucosamine ... glucosamine-6-phosphate).
Valerate and caproate are both fatty acids. Nutritionally significant ... to be sure ... but they are
typically not nearly as powerful as growth substrates in comparison with sugars and amino sugars.
I don't think that some form of acetate is "out" of any manufacturer's equation ...
<a href=showthread.php?s=&postid=7825221#post7825221 target=_blank>Originally posted</a> by Flint&Eric
... You mentioned Fe which I agree with...With Zeo is the Fe in the zeolithes...or is it being dosed? If it is being dosed what form would be usable...would simple Kent Fe supplement be suffice? ...
Sorry ... I don't feel it's appropriate for me to get into ZEOvit stuff here.
On a slightly different tangent ... supplementing Fe into the water column is a tricky thing if you're working with
Acroporidae,
Pocilloporidae, and their relatives. While you may overcome some Fe limitation in certain strains of bacteria, you may pay a price in terms of an effect on zooxanthellae.
JMO ... HTH
