What's wrong with my babies? On the youngest one it look like it could be a splash burn from nutrient solution. But what's wrong with the oldest one the outline of the leaves are turning brown?
it looks like the beggining stage of cal/mag deficiency..... but with no info as to what your adding, soil or hydro or coco etc, nutes your using, water type, ph of soil, temps, RH % etc etc etc.,..... its really hard to tell
Oh sorry soil grow. Using miracle grow i know not the best but all I can afford. Water ph is in the 6.0-6.5 range. Temps are cool 60-75 degrees. Using Professional Hydroponic Formula nutrients 20-20-20. Use at 1/8 the strength.