Newsgroup: it.hobby.acquari
Titolo: denitratore

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Articolo preso da 
http://marine-monsters.com/front/products/denitrat.html
<inizio>
• AZ-NO3TM - The Thirty-Day Nitrate Remover <Immagine> 
One Step Beyond Nitrification. 
Synopsis 
The AZ-NO3TM (Absolute Zero - Nitrates) product works entirely by aerobic
Cellular Respiration on the target Nitrate molecule, which is then removed
by the Protein Skimmer. The oxidoreductases necessary for these processes
are the chemical mechanism of an enzyme action.
In the most simplest of explanations, AZ-NO3TM can be considered an
essential food, required by the active enzyme maltase that functions as a
cellular respirator. The manufacturing process renders this product as an
undesirable food to certain detrimental enzyme (amylase and invertase) that
could uncontrollably proliferate in the aquarium. 
Our product utilizes a specific enzyme in the maltase group to activate the
oxidoreductases necessary to reduce nitrates by cellular respiration in the
aquarium. The product itself does not contain this enzyme, but can be
thought of more like a seed, a seed contains the germ (plant) and the food
for the plant to grow. The mature plant then becomes the basic food product
utilized.
The active ingredient in our product is Cozymase which function in the
oxidation of proteins and of many other compounds important in the
intermediary metabolism and the resulting active enzyme Maltase in the
aquarium. The Massecuite is food for both the Cozymase to develop and the
resultant Maltase to thrive. 
Dosage
The proper denitrifying dosage of the product is 1/4 ounce, daily, for each
50 to 60 gallons of water in the aquarium system, until nitrates are
undetectable. Overdosing, (up to double the amount) is preferred to
underdosing and is not harmful to livestock. Larger aquariums will require
a larger dose, but nitrates are normally reduced to zero within the same
time period.
Many aquarists inadvertently introduce nitrates on a continuing basis,
through water changes, food, additives, etc., therefore requiring that they
maintain the enzyme activity at a low maintenance dosage to hold nitrates
in check. Initially the maintenance dosage should be 1/2 of the
denitrifying dosage, steadily decreasing the amount of AZ-NO3TM used until
nitrates can be maintained at an undetectable level. 
The intent is to slowly wean the aquarium off the AZ-NO3TM product
entirely, allowing the natural denitrification properties of the aquariums
live rock and/or plenum to come into full functioning. The maintenance
dosage can be rescheduled for bi-weekly or even weekly additions as the
live rock or substrate develops to it's full potential. 
Effects
AZ-NO3TM provides many other benefits besides nitrate reduction. Upon
addition of the product to the aquarium, you will notice that the Protein
Skimmer becomes more efficient and remains that way for approximately 30
days after the final use of the AZ-NO3TM. In addition, as the enzymes
become active, all sediments and pre-filters in the aquarium remove larger
amounts of undesirable organics, thus requiring more frequent filter
changing. 
•It does not interfere with any nitrate test kits to give you illusion and
fake denitrating effects like the other product. •It brings down &
maintains your nitrate from as high as 100ppm or more to an Absolute-Zero
level. Hence the name. •Completely safe for reef and all-fish marine
systems. <Immagine> •An efficient protein skimmer is required to remove the
bonded nitrate compounds. •Contains absolutely no yeast nor complex sugar
which will cause adverse effects & other unpredictable complications upon
long term usage. •Fully-tested by actual hobbyists with all inds of marine
systems and different starting levels of nitrate concentration. •Newly
patented formula developed by a group of Biochemists / Hydroculturists. $19
for a 250-ml bottle 
N-Forcer 
The electro-chemical denitratior based on electrolysis technology. This
device has been released and perfected for over one year and has been
proven to work. In a 55g all-fish marine aquarium, the N-Forcer can bring
down the nitrate reading to less than 10ppm (form 60ppm) in less than 2
months. Since its introduction, the newer N-forcer now has newer flow
pattern, electronic design, titanium electrode and medical grade epoxy.
Cleaning solution for the electrode included. 110v or 220v models
available. For 200 gallons. $320 
• Nitratreductor 
<Immagine>This Aqua Medic's Nitratreductor is filled with Bactoballs for a
hugh amount of surface area, denitrifying bacteria are easily maintained
and fed using the included Denimar tablets for precise dosing. A more
trouble-free way of feeding them is to use the patented Deniballs (not
included), which is a type of carbonaceous-based plastic media for
automatic feeding. The unit also has a mount for an ORP probe so that an
ORP controller can be used to control the precise flow into the
Nitratreductor in order to get the most optimum denitrification. $180 
•Deniballs Refill
0.8 litre (24 balls). $33 
<fine articolo>
-- 
Paolo Bernardi - ROMA
Paolo_B...@compuserve.com

 • AZ-NO3TM - The Thirty-Day Nitrate Remover <Immagine> 
 
Lo farei se capissi l'inglese :-(
:-)
 
-- 
Ciao
          _______________________________________
         |                                       |              
         |          Maurizio Ghelli              |
         |              Firenze                  |
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http://www.aspide.it/freeweb/ghelli
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http://www.ipsnet.it/netpages/room52/
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 <fine articolo>
Questo invece e' un classico filtro biologico denitrificatore della Aqua
Medic (casa a mio parere che produce ottimi prodotti, anche se in Italia
troppo cari, vedi ad esempio la sua linea di schiumatoi, a detta di molti
sicuramente fra i migliori esistenti). La novita' sta nel fatto che tra le
palle (BactoBalls) di materiale plastico di supporto dei batteri, che si
trovano all'interno del filtro, e' possibile sistemare palle (DeniBalls) di
materiale organico, che sciogliendosi in modo lento e controllato
forniscono per un lungo periodo il "cibo" organico di cui i batteri
anaerobici ed eterotrofi che trasformano i nitrati in azoto gassoso hanno
bisogno.
Non conosco esperienze con questo filtro particolare, ma il principio di
funzionamento e' quello di tutti i filtri biodenitrificatori. Recentemente
ho messo in funzione nel mio acquario un filtro denitrificatore dal disegno
abbastanza simile a questo e nel giro di qualche mese potro' riferire i
risultati ottenuti.
Purtroppo non ho esperienze dirette con questi specifici sistemi ed ho
esposto soltanto quello che conoscevo con qualche giudizio essenzialmente
personale. Tra l'altro affidarsi esclusivamente alle affermazioni dei
produttori o venditori per il giudizio e' estremamente inaffidabile.
Purtroppo per questi prodotti relativamente nuovi queste sono per il
momento quasi le uniche fonti di informazione, che tra l'altro spesso
risulta lacunosa ed estremamente generica. Sarebbe quindi molto
interessante conoscere i risultati osservati da chi invece abbia fatto
esperienze dirette con questi sistemi di rimozione di nitrati. Ci vorra'
forse ancora un po' di tempo.
Saluti,
Giovanni