[magicmagni]

I was playing around with this fertilator for the first time today and I am experiencing the same problems decribed here. I did get the NaN once, but the other times it just miscalculates the PPM. For example it says that 2ml Fleet will give somthing like 20ppm in a 55Gallon tank, which is way off.

Other than that I think that this can be a very usefull tool it may almost convert me over from Chucks calculator. Thanks for letting us use it.