Grow #1 - 75watt LED CMOG bagseed

I noticed one leaf with a lot of tiny white spots, that's actually been like that for weeks...I inspected it closer and saw 3 little black moving dots on the underside. I'm pretty sure it's spider mites. So I mixed up some spinosad and sprayed down the lower leaves only, avoided the buds, and cleaned the whole bottom of the tent. I think it was fairly localized. I'm not too concerned, just going to watch carefully. Nute-burn is slowly advancing at the tips of all the leaves, I cut feeding down a little. I can now see why people flush, I think stuff just builds up in the soil at the end. I'm setting up a Blumat auto-watering system for an upcoming vacation, so I will be feeding just straight water while I'm gone. I'm testing it out this week while I'm home. I realllllly hope everything goes well. I got a usb microscope to look at trichs. I can find maybe 1-2 amber heads only at this point on the cutting that's 12 days ahead. I may harvest the cutting in 1-2 weeks. I added another half hour of darkness, so it's a 10.5/13.5 schedule right now. I will probably keep it like that till the end. The cutting is fattening up in its last few weeks of flower, and the main plant has fatter tops than the cutting had at that stage. I'm feeling better and better about potential yield, the grow is going well overall, proud of my girls.