I have a problem with my first grow. The leaves are looking a bit sad (see pictures). I was told it could be a magnesium problem so I added some Epsom Salts yesterday but today it is looking a little worse. Temp - 20c daytime, down to 17c night time Soil - Compo Universal PH - 6.5-7.5 Watered with Spring Water (ph 4) Age - 4-5 weeks old Nutes - One 1/4 strength Compo Universal a week or so ago. Potted in cut off old 5 litre spring water bottles Humidity 70% and dehumidifyer running Lights are CFL's 12 plants with 14 CFL's Leaves are looking a little dry. The new leaves are a bright green, older leaves are mottled yellow with some brown dots and some are curling and dry. Please help. If I loose the plants or get nothing from them, my wife will kill me over the money spent so far!!
thats all relative to what ferts, what NPK values your using? EG: miracle grow all purpose ferts (fastest acting Ive found, but very strong) 24-48hrs