thing is ,if you are using the meters,which are just 20 bucks for both ph and ppm /tds meters with solution,is if you do have problems down the line,you just weeded out two major factors to growing,ph what going in along with ppm ,stick same meters down in that runoff and what they are close to same so i still have a issue,then you can start to diagnosie from there.
just guessing is shooting from the hip,and shooting from the hip ,one day a round gonna wing off on ya,it would embarasse the hell out me to ask for help and find it was something so simple in the begining stage.
ever bag of soil i buy,i test,ph and all 3 macro nutrients npk with a cheap kit from amazon,20 bucks,every thing 20 bucks wit me ,hahahah,i know what soil ph is and were i stand on NPK,then every bit of liquid that goes into the pot is dialed in like makeing a pot of chili,once you got chilli down you stick to recipe right,same way with the medicine in my book,so NPK,soil ph,tds&ph going in on hannah feed schedule chart all bases are covered ,then id ask questions,cause i could answer most all would say right off