Fiuh ......

[Dinosaur]

After about two hour of slogging

finally finfsh changing one quarter of my tank water

because the NO2 was at a level between 0.025 to 0.05

*sweat*

[onghm]

huh ?

I thot 0.025 to 0.05 still considered quite safe ???

[harlequin]

my tank ever hit 50 ppm or more and fishes and corals are still doing fine.

[Dinosaur]

errr...... I am talking about mg/L

50 ppm

are we talking on the same type of measurement base on JBl NO2 tester kit chart?

[Tanzy]

my tank ever hit 50 ppm or more and fishes and corals are still doing fine.

I think it's nitrates, if nitrite hit 50ppm it will be all gone!

[dodo]

yup...i thk so too.... 50ppm range is probably for nitrates as to nitirite safety level...i tot it should be zero?

Dino...how old is your tank?...if your tank is matured and properly gone thru the nitrogen cycle...how come there is still traces of nitrite????

[Dinosaur]

yup...i thk so too.... 50ppm range is probably for nitrates as to nitirite safety level...i tot it should be zero?

Dino...how old is your tank?...if your tank is matured and properly gone thru the nitrogen cycle...how come there is still traces of nitrite????

erm ..... about 1½ yrs old liaoz .........

[Tanzy]

Maybe it's just the testkit.

mg/L (1 L = 1,000,000 mg) = ppm (parts per million)

[Dinosaur]

Maybe it's just the testkit.

mg/L (1 L = 1,000,000 mg) = ppm (parts per million)

huh? Tanzy, so are you suggesting that JBL NO2 tester kits is not that reliable? Any better brand?

[Tanzy]

I won't suggest that you even bother getting a new test kit for a mature tank. Even if a nitrite spike happens it will resolve itself in less than a day. Looking at the colours, I find it hard to differentiate between the yellows at the low range. Don't need to worry too much. Trust nature to take its course.