Nivarna grow zkittles

OK so everything was looking good one day nxt day looked like this I'm assuming some sort of mag deficiency it was on plain water phed to 6.5 At the time. Think this is week 7 of flower and its showing no signs of finishing so it will definitely be a 10 wk finisher. I've ordered some geleto seeds so it has the time for them to come germ and be ready to go in. Before I chop them. Really stinks now I can not go in tent with out coming out stinking and I don't have to touch it. M