Okay, having some slight issues with my plants. I am a first time grower, while I know I'm not an expert I have done some extensive research but can't quite seem to fix this problem myself. The worst part is I can't diagnose it, I have not been able to find some sort of cannabis sickness that resembles this, it's only occurring on the new growth on the top of plant. Looks like maybe a bug problem? Calcium deficiency? I'm lost on this one, it has effected 3 out of my 5 plants and one of the plants has been battling heat/light stress for about 2 weeks. Gimme some answers so I can fix this please! And remember I'm balling on a budget