818 headband a.k.a Sour OG 2000w RDWC. First grow!

My plants are not doing so well after yesterdays nutrient change. It dropped from 850 PPM to 780 PPM and went from a 5.9 ph to a 6.3 ph. I think I'm going to mix a new solution today at around 1000 PPM or so and see how it does. The leaves are yellowing and curling at the top as you can see in the pictures. I assume this is due to my nutrient change? Any input?

I did a nutrient change. I had it set at 1000 PPM and 5.9 PH. After changing it out I realized I need to add more water, so I added more, but had to leave right away so I couldn't check on it. When I came back the next day the plants were looking great. It was not at 510 PPM. I added a little more and it is now at 595 PPM and 6.1 PH. I added a foot to the height of the tent as well and heat does not seem to be an issue for the time being

Unfortunately because I was using 1000w total for a few days a couple plants didn't get as much light and are growing a little slower. I figure I'll flip to flower when the larger ones are ready and have a reduced yield on the smaller ones.

Any advice on training this scrog? There are HUGE fan leaves at the top that make it harder to train the plant. When should I start trimming below the canopy?

Looking awesome bro keep it up


trimming below the canopy? should be done in veg but i find after the 2 weeks of stretch in flower they need another quick trim so do some now and some a little later

When it comes to scrog training it depends i filled my screen around 70% then flipped did more training till the screen was 100% then let it go from there i did have some that took off more then i would of liked but i had no more space for them so had to let them go should of maybe supper cropped them but didnt still ended up pulling 13 and a half oz off one plant so was happy

I defoliated. Before, after, and top view.

I accidentally suppercropped twice while defoliating. I duct taped them, but one of them may not make it