First of all, thanks to all of you for your positive input. If it wasn't for these and other message boards I would probably be dead in the water. As far as upping the nutes, I wasn't necessarily planning on making my any stronger. I was actually trying to find reference points for future grows. On my first grow I was bumping into a lot of walls and what not and I was only growing one strain (AK-47 x Blueberry). 7 plants under a 600 watt hps got me about 1.75lbs, which isn't bad but like most of us we're always trying to improve our methods.
This time around I'm growing 3 different strains (AK x BB, Sensi-Star & Nebula). So naturally, not only am I trying to adapt what I've already learned but I'm also learning new things along the way with the SS and the Neb. I already believe that I have peaked on the nute strength and I am slowly cutting back to plain water. After I added the Purple Maxx & Gravity, the only girl that showed signs of nute burn was the sativa pheno of my AK x BB(4 AK x BB; 1 sativa pheno, 3 indica pheno). The rest of my girls seemed to just soak it up without no problems. I will be using the data I collect from this grow and apply it to my next grow.