FastBuds Tester pack

Hi there! That looks to be phosphorus deficiency but it might be a lock out of phosphorus too, so now you need to decide whether to flush the soil and check if everything is as should be and correct if needed and if everything is fine, then you need more P

Always start with basics. Make sure your pH and EC are good going in and coming out. They look a little burned so your soil might be holding onto too many nutes. Your feed looks superconcentrated so even a tiny bit off on your measurements could be a big difference. Get an EC meter and test the ppms. You should probably be between 600-900ppms at this point. I bet you're registering over 1000 on in your runoff. Assuming you have EC under control, I would look to calmag. It's really the only thing you might be missing. Last possibility is a fungus. From the pictures, it looks like it could be, but I don't think that's the case here.

Looks like nutrient lockout buddy! Or nutrient burn! You may want to check PH level to make sure it’s not too high! Ph for these love to be around 5.5-6.2 wishing you look bro