mg thats the problem its ph spoting from shifting ph when the mg dumps alot of time release all at once i wouldnt feed anymore and dont flush that'll make it worse sorry next time use soil with no nutes added and add your own
ya dude haha i just did the same thing to my plants... I used MG and put fertilizer in and burned my plants reaaaal bad... so i went and got some fox farm potting soil... that stuff is the shit...