thanks rusty,
i let my friend load these pics and told him to fill out the troubleshooting form but he didnt do it. i dont think its hot in the room and i think the ones that are doing it are on the outside edges, not under the light. as far as over watering, he did increase watering from once to twice a day while the weather was nice. the medium is Roots Organic coco 0-0-0 in 12in mesh bottom pots on E&F. it drains very fast. i told him to get on the Q&A thing but we'll see.
thanks-