Everytime I water the plants show signs of burn. I use lemon for pH down .5 tspn per gallon and cal/mag/iron 5 ml.
All other strains are doing great.
What gives?
What is the ph and ppm of your water before adding lemon. If its in our not far from the 5.8-6.9 range then don't add lemon. The soil will buffer. Do you check your soil ph before grow? This is something I learned to do in my early grows. Some soil can be very alkaline like 7-9 and needs adjusting to bring this down.