Leaf Problems

Can anyone tell me what's happening with my plant. Someone said my ph may be off. I am growing in a small, unused bathroom, in soil with a Sylvania "SpotGrow" light 120 w at a distance of about 2 feet. Light is on a timer of 18 hr. on 6 hr. off cycle. I water regularly (usually twice a week) and add miracle grow every couple weeks. I also spray the leaves daily with a Miracle Gro/water solution(light mixture). This is my first so I'm probably way off on correct procedure.
I have included pics.

has you plats always done this? If so increase the water you give them water every other day until just a little comes out the bottem. And it just started to happen maybe you should move the light closer my light is 2 inches away from the tips of my plants. Another thing is stop giving it the spray for a while maybe you are burning the leaves, you cant really see in ur pic. Try some things out change one thing at a time until you see a improvemen.

I will try your tips, thanks. I also found out that the light I am using is a piece of crap, so I'm going after new ones today. Toke it easy.