Magnesium def??

Hello all!

Wondering if I can get some help diagnosing my sick plants? I believe it's magnesium def, but just want to be sure.

Thanks!

Sorry for the short post last night! It was late and I just wanted to get it out there to try and find some answers. I'm a veteran outdoor grower, but this is my first indoor grow. The plants are 5 weeks old, and the strain is Smurfberry x White Russian Auto. I have more pics I can post if needed, but it looks like mg def to me, and I just wanted to be sure. I'll be treating them with some epsom salts tonight when I get home from work. When the leaves first started to show up light in color, I thought it was light burn as I'm growing with CFL, and the bulbs were pretty close for a tad.

Thank you in advance for any help, it is much appreciated!!

Not light burn. You have to keep them cfls close on it, i used to grow w/cfl's, and i kept em inches from my plant with no issues. Id say could be cal mag def, but it could also be lockout, preventing it from being able to uptake the nutrients. It cant hurt to flush her out and start from 0.

Thanks for the reply! I just got in from giving them a small dose of epsom salt solution. Will update with results. Here's another pic.