^ Yes, please do something to bring that PH below 7.0.
"PH - The pH of water after adding any nutrients should be around 5.9-6.5
(in rockwool, 5.5-6.1) .
Generally speaking, the micro-nutrients (Fe, Zn, Mn, Cu) get locked out at
a high pH (alkaline) above
7.0, while the major nutrients (N, P, K, Mg) can be less available in
acidic soil or water (below 5.0)."
There is also a small possibility your CFLs are too hot:
"Heat - If the lights are too close to the plant, the tops may be curled,
dry, and look burnt, mimicking a
nutrient problem. Your hand should not feel hot after a minute when you
hold it at the top of the plants."
http://www.greenmanspage.com/guides/nutrientdisorders.html
Once you have brought the PH down, and the plants are not too close to the bulbs, you should have a better idea of what is wrong (if anything is still wrong)....all of these problems need to be addressed immediately though.