What Is Ppm?

[Malawakiwhite]

My ammonia is at 2.4 but on reading my nutrafin test this is mg/litre so now confused AGAIN

 

[Ben M]

ppm is parts per million.

cheers

 

[Malawakiwhite]

Thanks but how do I work out what my tank is?

 

[codheadjohn]

My ammonia is at 2.4 but on reading my nutrafin test this is mg/litre so now confused AGAIN

ppm is parts per million. They're the same unit with a different name:

1000000mg in a litre

 

[Malawakiwhite]

o.k wow confusing? but I get it so my tank is o.k. My chart only goes to 3 though I think so will struggle to keep it below 6 surely? oh well I'll keep going

 

[codheadjohn]

When you say your tank is ok, what do you mean? To put fish in? It's definitely not ok for that.

 

[Malawakiwhite]

No definately not just that I don't need water change etc

 

[waterdrop]

Our use in the hobby of parts per million (ppm) is really just a convenience because it's easier to type. mg/l is the technically correct term for what we do because what we're measuring is a solid (mg) in a liquid (litre,) whereas ppm is used for solid in solid or other same-state measurements. In the very low concentrations we deal with however, the numbers all come out the same, so we just use mostly ppm and it's well accepted among hobbyists.

~~waterdrop~~