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tosiek

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i have but not the zeovit. Check on RC or on the zeo website on the pro's and cons. Most people i know that were using it, as well as me, have stopped. It works but there are cons like nuisance algae and other side effects.

You will get pastelly colors from using the zeovit system. And colors/growth rate are based on the dosing, and you can get the same growth on a regular system thats maintained. Its not dose by what they recommend.

The system is based on adding different strains of bacteria as well as amino's/nutrients into the water and a food for the bacteria. So, there are other ways to do so without going through a system like zeovit or fauna marin. The vodka method is another way if you think of it as bacteria, bacterial foods, ect.
 

jejton

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Suffolk
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Well if everything is going well in your tank as it is, then I would assume you have adequate nutrient levels. If you have overgrowth of algae and other organisms, then you probably have a nutrient overload. FWIW, I would imagine that rather than having global nutrient deficincies, we might experience a deficiency in a particular nutrient for a particular species but to determine that properly would require a properly done study.
 

ShaunW

Advanced Reefer
Location
Australia
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Certain amino acids supplied externally will improve the health of your reef if they are limiting beforehand.

I've posted this many times in the past:

Interactions between zooplankton feeding, photosynthesis and skeletal growth in the scleractinian coral Stylophora pistillata.
Fanny Houlbr?que, Eric Tambutt?, Denis Allemand and Christine Ferrier-Pag?s


Summary

We investigated the effect of zooplankton feeding on tissue and skeletal growth of the scleractinian coral Stylophora pistillata. Microcolonies were divided into two groups: starved corals (SC), which were not fed during the experiment, and fed corals (FC), which were abundantly fed with Artemia salina nauplii and freshly collected zooplankton. Changes in tissue growth, photosynthesis and calcification rates were measured after 3 and 8 weeks of incubation. Calcification is the deposition of both an organic matrix and a calcium carbonate layer, so we measured the effect of feeding on both these parameters, using incorporation of 14C-aspartic acid and 45Ca, respectively. Aspartic acid is one of the major components of the organic matrix in scleractinian corals. For both sampling times, protein concentrations were twice as high in FC than in SC (0.73 vs 0.42 mg P–1 cm–2 skeleton) and chlorophyll c2 concentrations were 3–4 times higher in fed corals (2.1?0.3 ?g cm–2). Cell specific density (CSD), which corresponds to the number of algal cells inside a host cell, was also significantly higher in FC (1.416?0.028) than in SC (1.316?0.015). Fed corals therefore displayed a higher rate of photosynthesis per unit area (Pgmax= 570?60 nmol O2 cm–2 h–1 and Ik=403?27 ?mol photons m–2 s–1). After 8 weeks, both light and dark calcification rates were twofold greater in FC (3323?508 and 416?58 nmol Ca2+ 2 h–1 g–1 dry skeletal mass) compared to SC (1560?217 and 225?35 nmol Ca2+ 2 h–1 g–1 dry skeletal mass, respectively, under light and dark conditions). Aspartic acid incorporation rates were also significantly higher in FC (10.44?0.69 and 1.36? 0.26%RAV 2 h–1 g–1 dry skeletal mass, where RAV is total radioactivity initially present in the external medium) than in SC (6.51?0.45 and 0.44?0.02%RAV 2 h–1 g–1 dry skeletal mass under dark and light conditions, respectively). Rates of dark aspartic acid incorporation were lower than the rates measured in the light. Our results suggest that the increase in the rates of calcification in fed corals might be induced by a feeding-stimulation of organic matrix synthesis.

Extracted from:
Journal of Experimental Biology 207, 1461-1469 (2004)

If you read the paper there is a treasure trove of information within.

For example:

Feeding has also been shown to enhance sketetal growth, suggesting that corals allocate a high proportion of the energy brought by food to calcification processes. It is important to note that calcification is also a dual process, involving the secretion of an organic matrix and the deposition of a CaCO3 fraction. The presence of an organic matrix in coral skeletons is widely documented and is considered an essential prerequisite in the formation of a biomineral structure. This matrix potentially plays key roles in various processes such as crystal nucleation and growth, crystal size and orientation and regulation of skeletal formation. Cuif et al (1999) demonstrated that the composition of the matrix was different between symbiotic and asymbiotic corals, and Allemand et al. (1998) suggested that heterotrophy is a source of aspartic acid, once of the major components of the coral matrix.

From another part of the paper.

..... Allemand et al. (1998) also showed that no aspartic acid pool was present inside the coral tissue, suggesting the need for a constant supply from an exogenous source. By using 14C-aspartic acid as a precursor for organic matrix synthesis, we measured a higher incorporation of this amino acid into the organic matrix of fed corals.............

Feeding might therefore have enhanced the construction of the organic matrix by (i) supplying additional input of energy, espercially for the dark processes. Under high plankton concentrations...........uptake of organic carbon (and hence energy) may be significant and could provide some energy for calcium/proton exchange at night. Alternatively, the larger biomass of fed corals may have provided larger energy stores for dark processes. Thus, feeding might have (ii) directly provided the necessary 'external' amino acids and/or (iii) indirectly increased photosynthesis and therefore the supply of 'autotrophic' amino acids.


So in conclusion from the thoughts above, we have a internally synthesized pool of amino acids created via photosynthesis and secondary metabolism and an amino acid that is naturally limited in coral tissue (no storage) but is also the most abundant within the coral organic matrix.

And this amino acid must be supplied externally.
 

ShaunW

Advanced Reefer
Location
Australia
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Reefkeeping focus is always about Ca and Alk addition, but if you think about it there is living tissue above the calcium carbonate that needs raw materials to synthesize it. You can't have one without the other.
 

tommy818

tommy818
Location
bronx ny
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been using amino acids for about 3 months on my 180 sps tank.i add about 1 third the amount they recommend.cant say i have any positive effects from them nor have any negative effects.
 

jejton

Senior Member
Location
Suffolk
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Yes, ReefPlus, KZ and L Carnatine. Only dose if your nutrients are low.
Like Tosiek said. Check the vodka thread on RC.

How do you know if they are low? Are there AA test kits? If not, then isn't it pretty much just guess work?

Shawn, interesting citations but again, just because something is rate-limiting does not mean that it is limiting in our artificial environments. So the question stands, is there a practical test we can do to determine if 14c-aspartic acid is deficient in our aquariums ( or any other amino-acid ) ?
 
Last edited:
Location
Brooklyn, NY
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How do you know if they are low? Are there AA test kits? If not, then isn't it pretty much just guess work?

Shawn, interesting citations but again, just because something is rate-limiting does not mean that it is limiting in our artificial environments. So the question stands, is there a practical test we can do to determine if 14c-aspartic acid is deficient in our aquariums ( or any other amino-acid ) ?

No
 

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