First Grow 2 Tangerine Dreams 1 Romulan Berry!!!

I'm running 600w lamp with air cool reflector 12,000BTU portable a.c./de-humid/fan unit
188cfm exhaust fan venting via reflector out into my hall way
Im growing in 3 gal containers i got 2 tangerine dreams going and 1 romulanberry that i started from seedlings
I am feeding them Cutting Edge Solutions nuts some calMag and Bud Candy
all of this is inside a grow tent 5x5x7.5 DR150
first grow apr 4, 2012 - YouTube
this video i believe was made 4/4/12


tangerine dream at 2 weeks

Romulan Berry 1week old

tangerine dream this is like two weeks from seedling

this right here is a update on my grow today i am starting to see a little nut burn on lower leafs any advice?

here is some pictures of the nut burn

soil seem kind of dry today so i watered them with 6.0ph water and no fertilizer since i was showing nute burn
Run Off Results
tangerine dream (A) which is my bigger one
ppm 1330 ph 5.3
tangerine dream (B)
ppm1280 ph 5.3
romberry
ppm1570 ph 5.4