Ok, so in the pics you can see the plant that's been affected most. It's a lowryder and is in a DWC hydro system. The first true leaves have completely yellowed and remind me of the dying bottom leaves of recently rooted clones.

I'm thinking that it's either rust, or over feeding? I was up to about 7.5 mL of foxfarm per gallon, but I backed off to about 5 mL when I saw this problem, perhaps I should go even lower?

They're under a 400 watt HPS light right now. I'd appreciate a couple suggestions before changing my reservoir. I'd especially appreciate input from Latewood, Turtle420, and the Student
mountainman Reviewed by mountainman on . is this rust? Or over nute? Ok, so in the pics you can see the plant that's been affected most. It's a lowryder and is in a DWC hydro system. The first true leaves have completely yellowed and remind me of the dying bottom leaves of recently rooted clones. I'm thinking that it's either rust, or over feeding? I was up to about 7.5 mL of foxfarm per gallon, but I backed off to about 5 mL when I saw this problem, perhaps I should go even lower? They're under a 400 watt HPS light right now. I'd appreciate a couple Rating: 5