Hello TOTO86, I was just curious about how you like your light? how do you like it. is this your first grow. what is your tent size? i have the solar extreme 250, and the solar system UVB, I completed 1 grow, 2 plants, my yield was 2 oz dry per plant - 4 month total grow time. I must say, the shit is the booomb! not sure why your plant are turning yellow, but my guess is root lock, and you need to flush them. the rule is 5 times your pot size. so if those are 3 gallon pots, you need to run 15 gallons of fresh water through them. stick them in the bathtub, and start adding water!!
good luck.