ross
Well-Known Member
- Joined
- Aug 23, 2008
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Ive never really bothered with PPM and always thought it was kind of a hydro thing (i do soil) but might be purchasing a bluelab combo meter that has PPM so figured if I could use it to my benefit somehow I might as well. I know there are scales with ranges to use for different stages. I use tap water so I will already have dissolved solids in my water and Im not really sure if the scales are for RO water or what. Do I read the water plain then read it nuted and subtract the difference to apply to the scale if Im not using RO water? Any and all info regarding PPM would be greatly appreciated. I found it fairly hard to research cause no one says parts per million and PPM is often too vague lol. Thanks guys!