Whats wrong here besides the obvious

Hey so I just used cal mag at half dose 2 days ago for the second time at half dose and then all my plants started to wilt and get leaf tip browning they are based and have them in Fox farms happy frog soil the pics are crap but I'll add more if requested. Please help I already messed my babies up in too many amateur moves. What should I do
 

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Hey so I just used cal mag at half dose 2 days ago for the second time at half dose and then all my plants started to wilt and get leaf tip browning they are based and have them in Fox farms happy frog soil the pics are crap but I'll add more if requested. Please help I already messed my babies up in too many amateur moves. What should I do
Stupid spellcheck I dont know what "based" is but I didnt type that
 
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