first time aerogrow started

been watching a while, first post tho'. just got my aero in today, loaded 3 cones with 2 seeds each, figure ill pull 1 if they both germ. wish me luck.
oh, good bag seed this time.....
also, not really for this thread, but im 2 weeks into a hydro grow with a partner
@ his closet. we have 2 40 gallon tubs on flipped upside down on top of each other. bottom tub is reservoir, with 2 liter pepsi bottles sitting in there(with holes cut in bottom) bottles are full of vermiculite.
top tub has 6 6500 cfl,2 150 watt replacement cfls on 24/0. aquarium pump, yeast/sugar c02 bottle. i am using a
15.8% nitrogen (N)
5% phosphate (P)
13% Potassium oxide (potash) (K)
4% Calcium (Ca)
3% Magnesium (Mg)
7% sulfur (S)
2% iron (Fe)
solution, and i topped 1 when it showed 2cnd real set of leaves it is a nice y now. i topped another tonight. any pointers?
also this is 2 different types of good bag seed.

also, top tub is lined with emergency blanket. havent fooled with checking ph. the water doesnt move, and i change every 3rd day or so with aged city water. hasnt been a problem yet. do yall think it will get to be a deal breaker if i dont get a ph meter? i have litmus strips, better than nothing i guess, but nutes tint water blue and that would tint reading.......

dont nut at all till the roots are in the water for atleast 2 weeks

DONT OVER NUTE>>>>>>>>BETTER TO UNDER NUTE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NUTES ARE LIKE STEROIDS...too much will kill em!