Egyptian Purps

Week 4 see all 5 plants now in 5 inch pots and sat happily in the main tent. Both the auto purps are coming along nicely using a mix of Canna A and B with Canna Start. The purple envy is going along at a cracking rate for the only none auto. As you may able to see from the pic. One of the Krippleberry is yellowing fairly heavily. I believe this to be a magnesium deficiency. I've ordered up some calmag and this should hopefully cure that problem,Living in area with some of the highest quality tap water in the country its unusual for me to have these sort of problems.