Fish Quiz

[DreamertK]

A negative NO3/NH3 test appears as what color?

 

[sawickib]

Dark green?

 

[508]

Yellow

 

[malfunction]

Negative as in zero? Yellow

 

[TwoTankAmin]

I think the question needs to be rewritten to be more specific? Which test kits? Most test for total ammonia NH3 + NH4, not NH3.  I can post pics of color cards by different makers for the same parameter which turn different colors.
 

 

 
Red Sea kit

 

[KieranBoyne]

ummm... im with tta on that one, but im gonna guess light pink. Just because of the 2nd pic lol. And the test strips I used to use.

 

[daizeUK]

I think a negative result would be clear on both those tests while light pink denotes a low value.  So I'll say clear

 

[Mamashack]

-[SIZE=10.5pt]Which brand are the first ones on your picture TTA? Are they API? If so I can tell the difference between 40 & 80 ppm on yours much easier than I can on mine - they look exactly the same colour to me at home! Also the 5 - 40 ones are more orange rather than yellow on mine. How strange![/SIZE]
[SIZE=10.5pt]Sorry about the glare, but I'm talking about the extreme right column in this picture[/SIZE]

 

[daizeUK]

I thought they changed the colour chart for nitrates because people complained it was difficult to read.  I think TTA's pic might be the old version.

 

[Mamashack]

Actually I find the one he posted easier to read than mine! lol

 

[daizeUK]

I think it might depend which part of the scale you're reading.  If you have high tap nitrates like me then I want to be able to distinguish between 40ppm and 80ppm - which is difficult now - but more people are aiming for 0 nitrates so perhaps they couldn't tell on the old scale.

 

[Mamashack]

I don't use it now because it was so hard to tell the difference between 10 & 20 ppm too 

 

[ShinySideUp]

I have tried in all sorts of light to determine if there is even the slightest difference between 40 and 80 on the API nitrate scale -- there isn't. All I can say for sure is that my nitrates are above 40 but less than 160.

 

[sawickib]

Wow didnt that question spiral into a debate, should we have a new question? Its been a while.

 

[eaglesaquarium]

Ok...
 
What other parameters affect the ratio of NH3-NH4 besides pH?   (must list two)