Haha, im lucky, I know a really experienced grower when i see a potential problem il hit him up, just seeing a photo of the plant he's like oh it needs such and such just do this, he even called the ph pen problem, I call him the plant whisperer. Plants going to plant regardless spotting the problem on the plant is the key to doing it without a lot of tech. I do use ph strips now, not super accurate but good enough for now.