Grow #1 - White Crack & Stilton Special

I think I was fighting deficiencies during the week. Pretty sure there was, or maybe still is, a calcium deficiency. It has spread to about all of the plants now. I was keeping steady at a little under full strength cal mag and I think it caught up to me. I'm using full strength now and will see how that goes. What appeared to be phosphorus deficiency in the Stiltons is staying about the same. The stems on some of the White Cracks are starting to turn purple, so I added another dose of PK 13/14 last watering for all of the plants. Lastly, some of the lower and mid fan leaves are yellowing on the Stiltons. I am not sure if it is nitrogen deficiency or just something that should be occurring. I've been reading yellowing/dying on fan leaves can occur about this time of flower. They were looking a little pale too, so I went ahead and added a boost of veg nutes for some nitrogen. I haven't seen any nute burn yet, so I hope I have some room for error. I am liking the new light. It is pretty bright and it has not been putting out as much heat as the two lights I was using previously I adjusted the power of the new light higher throughout the week and it is now at max power. It is about 26" above the canopy now. I will start working it down to around 18" or so during the week. It could be about time to start the next grow. We can grow 12 plants here. Six can be in flower and six in veg. I am thinking the Stiltons could be about a month away. If so, I could probably get started on a few plants this week or next. Will decide on what to do while monitoring the ones going now this week. Would like to feel comfortable and know these are doing well before I start jumping into something new.