Magnesium deficiency recovery

Thanks for all the support on my girls as one wasn't doing so good. Kritikal k was turning yellow and growth slowed right down so had to use Epsom salts. Let's hope I see vibrant green leaves again. Any ideas how long to recover

Same deal with my plants.. epsom salt isn't working fast enough for me..I’ve never used cal mag... I may have to hit her with some big bloom!!