help again

can anyone try to help me address this i had giving her a table spoon and a half of cal/mg now her leaves are curling up some even getting brittle im a newbie and have failed three times already im trying to save these i have her growing in ffof my water is ph 6.0 soil is 7 i had a fan blowing air cross her its like 70 in temp an humidity is between 40 an 50% she is under a 400hps im lost really ive bought books videos an they never temp to address the prob im having at the time i have two auto girls left they was looking good but now i am losing them feels like slowly so any help will do dont wanna quit trying but i cant keep spending cause its adding up here is auto girl 1i will get pics of num 2 and post later today gotta go to where she is to get pics please bare with me an help if possible serious sos going out save our smoke

Similar thing happened to me after i added epsom salts to one of mine, i had added too much and locked out other nutrients. That's only what i think happened....and it may not be whats hapoening to yours but try just water see how it goes, if it improves great if it doesn't then it could also be nutrient related. Ffof from what i have read can be a bit potent for small plants, but they have survived so far right..? There are charts and pictures all over the place of what mj looks like with lack or abundance of specific nutrients in case you think you have over or under fertilized...good luck!

thanks i never imagine it would be so difficult i will just water next time because it seems like she is not drink water as quick as she usually does IDK SMH

How is it going?