First indoor or first time growing? Looks like ya have a few things to dial in. What are your temps and humidity? Also, how are u watering them?
I would get that net out of your way as your plants dont need it.
Looks pretty well established in the earth so I wouldn’t worry so much about temps unless ur real low like freezing. Mold is the tough part outdoor with the cool dampness that never quite drys out in the plant matter.
I’ve been seeing langbeinite popping up more on here for and additive and am interested to try it on my next grow. I run into these “rusting” issues in flower as well with my FFOF.
I’ll try to remember lol
For the price couldn’t go wrong imo. Read a bunch of of one star reviews myself and then took that with how a few buddies from work feel about em and pulled the trigger. Plus the boss wanted cameras to feel safe so it’s a win regardless.