I had a very high ph 27/12/2015 i use lemon juice and advanced nutrients Bud candy 29/12/2015 i bought ph test kit and ph down i test my ph and it was 9.0+ mabe 11.0 ph i use ph down and advanced nutrients Cal-Mag Xtra 3/1/2015 this problem started and i think it's p-k i use general hydroponics flora bloom and and advanced nutrients bud candy let's see if it stops.
i use the same stuff GHP and bud candy works nice but your problem is your PH now you have your PH tester your rocking as 11.0 PH is crazy but your on the right track now keep up the good work i find every grow theres something to learn after some time its clock work