the question is, in hydro system, if i have a clean system, with no “contaminants”, i still need change the water periodacally ?
I cant just add the fertilizers and CaliMaGic … ?
What the water loose with the time that make us to change to a new one ?
i’m planning a quiclky travel, 10 days, and i already have everything working automated, unless the water change. For how long i can use the same water, just adding fert and regulating the PH ?