My drip runs 24/7. My ppm is currently around 690.

Tonight I took the pump out and flushed out all the tubes, they seemed to be a little backed up. I also moved the fan closer.

It's been about 6 weeks now since I first planted the seeds. I just bought a new light last night that I should have by the end of the week, I bought a 150W CFL that says it has 9200 lumens.