Je to normálne?

[Lgaspo]

Ano ten externy filter je celosklenenny biofilter.
Ved tu to je popisane:
http://www.akvamalawi.com/phpBB/viewtopic.php?t=295

[canart]

NO2 mas vysoke. To je pricina.

Otrava nizsimi davkami NO2 (prave, ake popisujes) zacina otieranim sa o kamene, dno. Potom pri vyssich davkach su ryby letargicke, vacsinou sa zdrzuju pri dne. ozu vsak prijimat potravu z hladiny. Neskor visia pod hladinou a tazko dychaju, resp. rychlo. Ziabre su sfarbene svetlo- az tmavohnedo.

Filtracia Ti nefunguje, teda myslim tym biologicka - premena dusitanov na dusicnany.

Este jedna poznamka....aky test mas? Niektore testy (kolorimetricke) uvadzaju hodnotu N nie NO2, treba vynasobit nameranu hodnotu 3,3.

Hm, tusim som dostal inspiraciu na clanok o NO2, NO3

[Lgaspo]

Este jedna poznamka....aky test mas? Niektore testy (kolorimetricke) uvadzaju hodnotu N nie NO2, treba vynasobit nameranu hodnotu 3,3.

Hm, tusim som dostal inspiraciu na clanok o NO2, NO3

To chces povedat, ze ked napr. JBL testom na NO2 nameriam 0,03 tak to mam vynasobit este 3,3 ?

Ten JBL test je kolorimetricky - ale to je potom od vyrobcov minimalne trochu nezodpovedne ! V navode sa pise, ze na stupnici podla farby odcitam hodnotu NO2 a nie N !!!

Inak na ten clanok sa mooooc tesim !!!

[canart]

Ja neviem, ako meria ten JBL. Malo by to tam byt napisane. Niekde som cital, ze sa to tyka vacsiny hobby kolorimetrickych testov. Aj mna to prekvapilo. Asi by sa zislo nejako zistit, ako je nastavene odcitavanie napr. v tom JBL teste. Mozno je to uz prepocitane na NO2.
Tu je vyber z anglictiny

Nitrate
(NO3-N = 10.0 ppm; NO2-N = 1.0 ppm)

Nitrate, an anion (negative charge), is not adsorbed by soil and moves with infiltrating water. Of the inorganic contaminants found in water, nitrate receives the most attention. This is due to the fact nitrate is easy to detect and many natural sources are present in the environment.

A large amount of confusion exists over the way nitrate data is presented. Table 4 gives the conversion factors for the common methods used. You should note the nitrogen value used in the test report for your well water. For example a reading of nitrate (NO3) at 44.0 ppm is equivalent to 10.0 ppm nitrogen (NO3-N). NO3-N refers to nitrate by the amount of nitrogen present.

Table 4. Expression of Nitrate and Nitrite Values
Method 2
N NO2 NO3
Method 1
Nitrate as Nitrogen (NO3-N) 1.0 3.3 4.4
Nitrite as Nitrogen (NO2-N) 1.0 3.3 4.4
Nitrate (NO3) 0.23 0.74 1.0
Nitrite (NO2) 0.3 1.0 1.34

Method 1 x Method 2 = type under 2
NO3 is 23% Nitrogen by weight

If the water contains more than 10.0 ppm NO3-N it may cause infant cyanosis (blue-baby) in children under the age of six months. The cyanosis can be fatal to both infants and small animals.

[balmar]

Podla toho to mam total" zamorene"!(test mam kalometricky,ale vyrobca by stym mal pocitat nie?)