Staring First Grow!

Grow Room:
I finally decide to make my grow room 2 by 2ft initally with room to grow up and to spread the plants out once they flower. I bought two 7inch fans at walmart, one for cooling and one for exhaust. I couldn't find the proper tubing but I decided to make my air ducts out of heavy duty black trash bags. I folded the bag into a tube that fit tightly around the fan. Once I had the width of the tube I taped one of the side tube along the seem then I turned the bag inside out by sticking my hand through the inside of the tube and grabbing the opposite end tthus pulling the bag inside out and did the same thing on the other side to make a smooth eight inch tube that was three feet long. Also on either open end of the tube I folded the top 1/4 inch toward the outside (invering it facing out) and the duck tape it making a smooth tube. I used 1'4 inch foam board taped over with dull or flat white poster board. My inlet is on the ground, and the exhaust tube is over the lights which I will get into in a second. The temperature is always around 75 to 80 degrees with the new inlet/exhaust tubes the temp is even 72-73 degrees! The huimidity is around 50 to 55 percent. I hope this make sense I've been ripping the bong!
Lights:
Because I didn't want to invest a ton of money in the lights I decided on going with cfl (compact fluorescent) I used 9 cfl lights total. I used a mix with 6 of the lights being 23watts at 6500k or daylight and the other 3 in soft white at 23watts in the 2700k spectrum. I think 5000k is ideal so if my math is correct 6x6500k=39,000K and 3x2700k=8100k so 39,000k+8,100K=47,100 in order to get the median 47,100/9=5233.33.. Someone please correct me if I'm doing the math wrongam using the wrong combination of lights. But if I'm correct than the plants are getting petty close to the ideal light spectrum for the veg stage at least. The ideal light is 5000K for veg.
Watering:
Of the three plants I had to water one today (with adjusted pH) it was dry 2inches below soil, it's been 2 days. The other two pots the soil is still wet.
PH:
The pH tester I bought as for a pool anf used phenol red as a pH tester. I rest the runoff. If there is anything flawed in my method please let me know.
So I tested the pH of the runoff and it was really high 7.5ish or even a little higher which has me worried. I decided to adjust the pH of my water with apple cider vinegar. I put one capful in 2 and 1/2 gallons of distilled water and it changed the pH from 7.8 to 6.8. I've read you need to change the pH gradually so I decided to use 1/2 tap water with a pH of 7.5 with 1/2 distilled @ 6.8 to get a pH of 7.2ish. This is what I used to water the plant and will water with this pH for a week then I will lower the pH to 6.8 and ideally at 6.5.