Hi! My outdoor autoflower plant suffer from calcium deficiency and I want to stay natural I read online and at my local store they recomend me some epsom salt. This forum is very good with me so I just want to make sure with you guys before! So how my I give to my autoflower? Last week i give them a little bit of guano ( tea) ( the guano i give them have no calcium in it) They are about 5week old and one is already starting to flower thanks!