curling up and dieing leafs

Been in 1212 for 4 weeks now,I think its mag def but not sure,watered 2 days ago,u guys think I should water them again with som epsom salt to flush the soil or what?I have never had any issues befor,I used som shit ssoil this time around,I won't do that again,sorry about the pics,my tablet sucks

Water with epsom salt to flush the soil??? HUH?

Shit I don't know,I have never had to flush the soil unless I'm at the last 2 weeks of flowering,never had issues like this befor

I take it that's not a good idea,lol

Looks like a Magnesium deficiency, Calcium deficiency, Possible Spider mite damage, or heat damage to the leafs- IMO