I've been getting a bit anxious about the biofilter of my quarantine tank after a bad ammonia spike.
I remember Dr Tim saying absence of nitrite is a good measure of a biofilter's health. I thought that was actually quite convenient since measuring ammonia accurately is difficult, when you have copper in the water.
I'm having trouble deciding which Hanna Nitrite checker I need, since there are four. Maybe @Randy Holmes-Farley , @Dan_P, @taricha, @Lasse may be able to chime in on this.
Looking at the table below, it seems I need the HI767 Low Range checker.
But what's the purpose of the HI764 Ultra Low Range Checker then?
It's got a smaller range (0-200ppb) than the HI767 LR Checker (0-999 ppb), without increased accuracy (for both it's±10ppb, ±4%).
Is the HI764 Ultra Low Range just a worse or older version of the HI767 Low Range?
Thanks a lot for the help!
P.S. By the way, is 999 ppb NO2-N the equivalent of 3,27 ppm NO2?
I remember Dr Tim saying absence of nitrite is a good measure of a biofilter's health. I thought that was actually quite convenient since measuring ammonia accurately is difficult, when you have copper in the water.
If they get stressed they'll start to break up and you will start measuring nitrite, that's the canary in the coalmine. [...] If there's one thing you're gonna measure is measure nitrite on a regular basis and if it starts to appear that tells you there's something wrong with your biofilter. Because these bacteria will always stress first and stop converting nitrite to nitrate. I know a lot of companies wants you to worry about ammonia but it's really the nitrite that tells you way ahead of time that something's have you have a clogged filter you have clogged water path something's wrong with your bio filter and the bacteria are not working well.
I'm having trouble deciding which Hanna Nitrite checker I need, since there are four. Maybe @Randy Holmes-Farley , @Dan_P, @taricha, @Lasse may be able to chime in on this.
Looking at the table below, it seems I need the HI767 Low Range checker.
But what's the purpose of the HI764 Ultra Low Range Checker then?
It's got a smaller range (0-200ppb) than the HI767 LR Checker (0-999 ppb), without increased accuracy (for both it's±10ppb, ±4%).
Is the HI764 Ultra Low Range just a worse or older version of the HI767 Low Range?
Thanks a lot for the help!
P.S. By the way, is 999 ppb NO2-N the equivalent of 3,27 ppm NO2?
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