trynig to figure out the tds portion here https://sites.google.com/site/aquaticplantfertilizer/home/tds-meter
my tap water is 50ppm, my tank water is 128ppm. just started dosing 3ml of macros (GLA pack). i dont understand how they tell when you need a water change?
maybe someone can help explain to me?
my tap water is 50ppm, my tank water is 128ppm. just started dosing 3ml of macros (GLA pack). i dont understand how they tell when you need a water change?
maybe someone can help explain to me?