CFLs aren't really all that bad. In a small space they can be really useful because they don't need as much height as other lights since you can place the bulbs just a couple of inches from the plants. My first indoor grow I built an array of 8 23w CFLs, 4 6500k and 4 2700k bulbs, and I got...
They definitely seem to be starving. What size pots are those? They look like they might be a little too small. I'd recommend 5 gallon fabric pots at least.
If you're using Tiger Bloom in veg then that might cause problems, but it could be caused by anything from the nutes being off, to ph being off, to root problems. Can you share a pic of the roots?
It's likely do to a type of cyanobacteria in your reservoir which is usually caused by the reservoir getting too warm. Maybe turn the ac down a few degrees lower and see if it helps. Is the water turning cloudy at all, or are the roots turning yellow/orange?
Also in dwc I'd recommend going...