Pure water club or filter review

I seen guys talking bout PwC ro filter I order one do to cheap prices
Got it and 2 days of ordering it but I hooked it up my ppms went from 165 to about 21 ppm but the problem i have is it didn't change my ph anyone else having this problem?

pH is meaningless at low ppm. Don't measure it.

With zero buffering capacity, pH will swing wildly just from absorbing CO2 from the air. Once you add buffering capacity (nutrients), a pH measurement will be meaningful.

I've had no problems with my pure water club 75gpd portable unit other than needing new filters after lots of use.

At 21 ppm, once you add nutrients, your pH should be nice and stable. Measure pH after adding nutrients, then adjust.

churchhaze said:

pH is meaningless at low ppm. Don't measure it.

With zero buffering capacity, pH will swing wildly just from absorbing CO2 from the air. Once you add buffering capacity (nutrients), a pH measurement will be meaningful.

Click to expand...

Yeah I added 1/4 nutrients to a gallon and the ph went down to the 5 region . I can run with low ppm now b cus of my very sensitive. Ecsd but will I have problems later with different strain

churchhaze said:

pH is meaningless at low ppm. Don't measure it.

With zero buffering capacity, pH will swing wildly just from absorbing CO2 from the air. Once you add buffering capacity (nutrients), a pH measurement will be meaningful.

Click to expand...

yeah i just added nutes at1/4 tsp a gallon and ph was at the 5 region now the ppms are low 100-150 now its okay now becus i have a very sensitive easy coast sour d but once i get a diffrent strain and want higher feeding is there going to be a problem with ph staying up