Originally Posted by DoDad
So that I am perfectly clear, this 750ppm you refer to includes my tap water or no?
My tap water is 200ppm, so should my PPM meter read 750 or 950ppm max?
Ok, first point of confusion is probably the 750ppm being a 500 conversion reading. Pens using 700 conversion will read higher than 750, so if anyone would care to throw this out there I'd appreciate it.
As for total ppm with tap water, in 15+ years of hydro I really have zero experience with tap water which would apply here. I've literally used r/o all this time, and it's been rock solid predictable in all the states/areas I've lived. I'm usually within 30ppm and right on with pH, just eyeballing the MaxiBloom and pH up. lol
I couldn't even begin to guess what's in your tap water, so any advice I give would be pretty useless.