they're not over fertilized........ they'd show leaf burn. absolutely no leaf burn on my plant. and yes, i've switched the ferts to a 5-15-10 ratio. may be underwatered, but i've checked the ph every day, and it's been fine. one problem is the a couple leafs are bent weirdly towrds the top, and the ones that look like theyre dieing are only at the bottom. i topped it halfway through veg, so it bushed out alot. i'm wondering if it's because those bottom ones aren't getting enough light.....????