my calcium test reads in mg /litre
 

So what the heck does that come out to in ppm? what is it supposed to me?
Man this is the first time i've used this test. It's the calcium test from seachem.
I've also learned that I enjoy doing the tests ...I always did like science lol

anyway I'm guessing that 500mg/litre is low since it took the whole dang 1ml dropper to turn blue ! lol
asherah

Never used Seachem tests before. There could be a conversion chart in the instructions that could tell you how many ppm your ml/L is.

Here's a conversion chart for your reference.

Matthew

http://ozreef.org/content/view/5/2/

ppm
 

I know it is late, but isn't there 1000mg per gram, 1gm H2O=1ml, with 1000ml per litre....so thats 1000x1000 doing the units = 1 million or ppm.....so ppm and mg/l are equivalent.
Right? :smile: