Hi there THraCian, so basically when you use biotabs, sometimes there is too much N if you have such a short Veg. You can see there is too much N, from the " very green " or "too green" aspect of the leafs. The second thing is there is usually not enough Calmag in them actually. You can see this from the rust spots on the leafs. What you can do for that is make a calmag spray, and spray once a week, just follow the instructions on the bottle , maybe even add less calmag to the water solution and just spray the plants just before lights on. If you do this , the problem will stop spreading immediately and the plant will recover within a few days. I hope this helps ! 🚀