I non-existing penny for your thoughts

Howdy guys/girls,

(Specs)
This is my second try at growing, special thanks to all who help last go round (me killing 4 plants) appreciate the input. This time I'm growing White Castle Feminized from Nirvana in a Grow Lab GL 60 - 2' x 2' x 5'3". I have a 4" Dayton fan (pic) for intake and a 6" Dayton at the top for outtake and a small green fan (pic) for circulation inside the tent. I have had the PH at a solid 6.0 and the humidity between 30-40% and the temperature between 75 and mostly 85, a few times 90. The lights that I'm using are 2 CFL's both are 65K, one is 300 watt equivalent (75 actual) and the other 400 watt equivalent (105 actual). She will be two weeks old tomorrow the 14th.

(Question)
I was planning to LST this girl and when I last checked on her I noticed that the top was yellow and that the lower larger leaves had some light colored spots, I have them only in distilled water, no nutrients, and I was wondering what could be causing this problem, please help! (If you actually have an idea and are not just typing to increase your words per minute average.)

looks hungry to me bro.

you need to give it a weak feeding and then look to increase strength very slowly as more foliage develops she will get hungrier .

you may want to consider lowering pH to around 5.5-5.8 if you are hydro.


J

Alright, thanks jondamon, so what do you think of General Hydroponics nutrients?

looks hungry! up the ppm a bit. im personally not a fan of GH

What would you recommend Btownbud?

I use GH and never had a problem after 10+ grows

That looks real healthy man, what level of nutrients did you use and when?

I'm a big fan of Advanced nutes. GH is all chemical, not fully schelted either

im not saying you will have any problems, i just believe that a more balanced nutrient will grow a bigger, faster growing and more portent plant. It's like food, sure, you can live off of mc donnalds and fast food, but you'll grow a lot better if you have a well blanced diet. not all sugars are the same, nor ar fats, or carbs. Same goes for nutes.e
GH is a fully chemical nute, basically fast food for a plant! But that does make it more simple, cause with nitrate based nitrogen and other ferts you dont have to worry about the nute needing to be broken down to be fully absorbed. So their is a plus.