I know I need to get them. Been doing about 50% on nutes first 2 weeks then 25% less than recommended on nutes rest of time, and I use ph drops and color code scale to check and adjust H2O before adding nutes.
Just checked out BlueLab and for right now it’s a bit out of my budget. I’ll have to get a cheaper one for now and hope it lasts for the rest of the year. But I’ll definitely get them in January when I can stock up on supplies. In the meantime I’ll get the cheap ones to hold me over. Thanks for the 411!