I guess with all this activity I've remembered that I might have some issues here:
Calcium def? Root rot? Maybe that Cruella Deville branch was trying to tell me something? I noticed a little root popping out of the side of my felt pot, is that ok? I'm using 1tsp cal/mag (Black Magic) per gal, along with recommended FF Big Bloom, Grow Big and Wholly Mackerel, diluted to 75% on the big gal, 50% on the others. Watering when they are light weight and dry on top and bottom (although the felt pot never gets wet on the bottom). Felt pot is up to 4 cups at 42 days old, 3 cups for the 28 day olds that are healthier and drinking more, 2.5 cup for my runt, she seems to take water way less often. Any thoughts?
Edit: This rust/browning is only showing up on a few of my big old fan leaves. All other growth looks excellent.
What do you mean when you say “felt pot is up to 4 cups at 42 days old? 4 cups of water?
If you say the bottom of your pots never get wet, that sounds concerning to me. When you water you should have some run off out the bottom of the pot. It assures you that your roots are being fed properly, and drawing oxygen from the top of the soil to the bottom roots.
How big of a pot do you have them in?
Wow you have a root that broke through the felt? First thought, is that it is a concern... but in all reality one root may not be as big of issue when thinking about the entire root system. Maybe try, carefully, moving it back in... might have to make the hole a bit bigger.. I don’t know exactly how to handle that problem. Never had it happen to me.
Those browning leaves... with time I’m sure you will prune your girls, and they will be the first to go I assume. You say the new growth is coming in nicely, that’s a good sign. My first thought at those pictures is a calcium deficiency like you say, but the new growth would have the same problems no? When you feed your girls, do you check the ph of your water? It’s a simple task that I’m sure everybody knows to do so, just trying to narrow it down. If so, have you checked the ph of the run off of the water? Or the soil it’s self?
I would say with your next feeding, hold off on the nutes. Giving them a bit of a flush. Checking the ph of the run off. When they dry out give them a weaker strength solution of nutes. Then gradually get stronger.
If your under feeding your plants, that can lead to issue as as well. Will go into further detail with that if you are interested.