Measuring Phosphate

[hawkfish]

In measuring phosphates (inorganic) my seachem test kit measures mg/l. I'm dosing a product called NoPox which relates to phosphate in ppm. For phosphate, is ppm and mg/l the same, or is there a conversion factor.

 

[cjsparky]

From what I understand, with a fresh water system, mg/l and ppm are the same, but the addition of salt may skew it slightly. I would still think it close enough to safely dose however.

1000 mg = 1 gram. 1 liter = 1000 1 kg...therefore 1000000 mg = 1 liter...

CJ

Edit: And any skewing with the salt changing specific gravity, would be eaten up by a skew in exact water volume...round down IMO.

CJ

Edit: Ugh...sorry crazy math

1000mg/gram x 1000gram/kg

1kg = 1 liter pure water

 

[Jaycen B.]

Yes, ppm and mg/L are the same.