How To Use Progressive Web App aka PWA On 420 Magazine Forum
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Test your tap water first. You may save yourself some money and time. My tap water here is only 30ppm. Not worth the time or money for an R/O system. Keep in mind that R/O systems are extremely slow. The gallons per day rating is for a 24hr period. So if it is rated at 50gpd it will take one hour to make two gallons of water.
you need to use a ppm tester to test your water.. google search it. .
Also known a TDS meter. TDS=total disolved solids
TDS meters measure by PPM units. PPM=part per million, a measurement disolved solids like minerals (i.e. calcium, salt, etc). Meters I've seen don't specify the solids the percentages of the different ones just a combined reading of them all.
E.C and C.F measure the same thing too. E.C is just your ppm divided by 700.
Just wanted to throw a bit of confusion in the mix for you. Jokin. It's always handy to know if you get a brand of nutes that use E.C instead of ppm.
E.C. is always E.C., but some meters convert using the 700 as you mentioned and some convert by 500. That's where the confusion comes in.
DD