I too have noticed that, using PPS-Pro, slowly over the course of a month my TDS creeps up into a range that I'm not such a fan of.
Over the course of 2 months TDS increased to a level that was detrimental to my softwater loving plants.
Now I do about a 20% WC every ~2 weeks.
Still beats 50% weekly WC in EI.
Over the course of 2 months TDS increased to a level that was detrimental to my softwater loving plants.
Now I do about a 20% WC every ~2 weeks.
Still beats 50% weekly WC in EI.