Get some Epsom salt at the store and put a level teaspoon in a gallon of water and water them with it. Give the change a couple days and see what happens.
polishpollack Reviewed by polishpollack on . lower fans leaves turning yellow need help Hi this is my first grow and im 3 weeks in to flowering and lower fan leaves turning yellow and the higher fan leaves are getting blotches on them. Im growing white widow in a mix of soil,perlite and miracle grow seedling compost the ph is 6.8 temp 70-80f i use tap water for watering that i leave a few days in a bucket before using(i dnt know the ph of the water) the light is a 150 watt hps Rating: 5