it could be a potassium def. possibly a magnesium or maganese def.

we are pretty much shooting in the dark here. if you fill out the troubleshooting form (in my sig) you might have a better chance at getting correct answers.

damage to leaves do not usually get repaired.


-shake
headshake Reviewed by headshake on . bright yellow spots OK - first off, apologies, as my digital cam isn't working...but I can describe the problem pretty well. Set up - one female flowering for about ten days in an NFT system under 250 HPS, with an EC Meter reading of 1.4 consistently in both veg and flower. Water and grow-tent temps exactly where I want them. I change the water every 3-4 days. Plant generally looking in excellent health until about three days ago, when I noted bright yellow spots in the middle of just some of the leaves...not Rating: 5