Ppm = Mg/l

[lukejwindsor]

hey guys,

ppm (parts per million) is the same as mg/L right?

eg. 1ppm of ammonia is 1mg/L of ammonia?

Thanks!

 

[st24rsap]

yup

 

[backtotropical]

Correct. For the purpose of fishkeeping, it is the same.

There is a small difference in that anything can be measured in parts per million, however only things which can be measured in litres can be measured in mg/l (ie. mainly liquids, which i assume is what you are concerned with).

Cheers

BTT

 

[Larissa]

Take a look at this recent thread for more info: http/www.fishforums.net/content/Tropical-Chat/230811/Ppm-/

 

[Seed]

Correct. For the purpose of fishkeeping, it is the same.

There is a small difference in that anything can be measured in parts per million, however only things which can be measured in litres can be measured in mg/l (ie. mainly liquids, which i assume is what you are concerned with).

Cheers

BTT

Maybe not exactly. If you know the proper conversion factors, mg/L is very versatile. For example, converting gallons to liters and then using mg/L or g/L is very useful for maintaining constant pH, at least this has been my experience. If you know the approximate mg/L it took to get your tank to its pH, maintaining a constant pH with water changes is not as difficult anymore. Same for KH or GH. But then again, this is my experience, and I am used to figuring out concentrations of substances in solution.

 

[Larissa]

Correct. For the purpose of fishkeeping, it is the same.

There is a small difference in that anything can be measured in parts per million, however only things which can be measured in litres can be measured in mg/l (ie. mainly liquids, which i assume is what you are concerned with).

Cheers

BTT

Maybe not exactly. If you know the proper conversion factors, mg/L is very versatile. For example, converting gallons to liters and then using mg/L or g/L is very useful for maintaining constant pH, at least this has been my experience. If you know the approximate mg/L it took to get your tank to its pH, maintaining a constant pH with water changes is not as difficult anymore. Same for KH or GH. But then again, this is my experience, and I am used to figuring out concentrations of substances in solution.

Sounds like someone knows their moles.

 

[Seed]

Correct. For the purpose of fishkeeping, it is the same.

There is a small difference in that anything can be measured in parts per million, however only things which can be measured in litres can be measured in mg/l (ie. mainly liquids, which i assume is what you are concerned with).

Cheers

BTT

Maybe not exactly. If you know the proper conversion factors, mg/L is very versatile. For example, converting gallons to liters and then using mg/L or g/L is very useful for maintaining constant pH, at least this has been my experience. If you know the approximate mg/L it took to get your tank to its pH, maintaining a constant pH with water changes is not as difficult anymore. Same for KH or GH. But then again, this is my experience, and I am used to figuring out concentrations of substances in solution.

Sounds like someone knows their moles.

Haha yes. Many sleepless nights going through general chemistry burned it into me. On that topic, if you know the chemical composition of what you are adding to the tank, such as NaHCO3, you can predict pretty precisely how much to add to a given volume to adjust things using mg/L to convert to moles/L. I absolutely love molarity for its convenience lol. But I am a nerd.

 

[Larissa]

Haha yes. Many sleepless nights going through general chemistry burned it into me. On that topic, if you know the chemical composition of what you are adding to the tank, such as NaHCO3, you can predict pretty precisely how much to add to a given volume to adjust things using mg/L to convert to moles/L. I absolutely love molarity for its convenience lol. But I am a nerd.

Very true - not that your a nerd, but what you said before, lol. Who says fishkeeping isn't an exact science?
I used to be quite good at molar chemistry, but have since been converted into a biologist and (of course) I have forgotten everything.