DWC Overwater??? Plants droopy.

Hi, I have 12 clones at around the 6-8" range, and they were happily growing under 200w of 6500k CFL tubes, and then one day I decided they could use some more light and placed them under a 600w MH (about 2'-3' away, I put the lamp vertically so I figured I didnt need to go back any further since the light was not concentrated on them by the use of a hood).

Anyhow, they started to droop really bad, so I put them back under the CFL's.
2 days later, and they are still drooping. When I moved them, I changed the water with 800ppm of 1-1-1 ratio of GH nutes, ph is at 5.8, air temps high 70's, water temps low 70's, air stones in 10, 18 gal rubbermaids, 18/6 lights... Everything seemed good. I did notice that the two plants I have in 5 gal buckets with the 10" netpot are not effected by the drooping (maybe because they have more air and are not drowning like their rubbermaid counterparts)
Lastly, the water level was about 3-4 inches below the 3.75" netpots, the bottom of the hydroton was not getting wet, so I raised the water level to 2" of hydroton since the bucket with that water level showed new pearly roots as opposed to the few long stringy roots that the other plants had.

Any help, please?
Much thanks in advance.

I wish I could post some pics, it would make things a lot easier.

On a side note, last week I added some Floralicious Grow and some LK to a test bucket, same total ppm and ph as other buckets. Anyhow, this stunted the plants, and made the roots go dark and bind together. So I cleaned off the roots in running water, changed out the water and went with the GH 1-1-1 ratio.

Now, those stunted plants are the only ones growing new short white roots,while all the other have long thin roots.

I'm relatively new to this, but to me the short white roots seem healthier than those long not so white ones. Is one root better than the others?

-Still learning

E-indoor
E-hydroponic
E-specific medium- rotorooter plugs in 3.75" net pots with pretreated hydroton and 2 10" netpots. 4 small net pots to a 18gal Rubbermaid
10" netpot in 5gal buckets.
HCL-DWC with 1 dual outlet walmart pump and stones per tub
SCLR-Soil or slab runoff pH- =
E-tap
E-Source water pH about 7.8
HRT-Source water EC (if hydro)...???? tap at 7.8ph and 150ppm
E-Age of plant= Clones cut 4 weeks ago, 1 week to root, 3 weeks
E-Type of fertilizer=GH lucas formula 1-1-1
E-Rate of application G,M,B from GH dont know exact ml, ppm = 7-800ppm
E-Lighting source and distance from plant=t8 approx 4 in 200w covering 3'x3'
E-Air temperature=High 70's to low 80's
HD-Reservoir temperature=low 71
E-Air % Relative humidity=54%
E-Lighting schedule=18/6
E-Type of ventilation your room has=12" circulating fan, no exhaust, sitting in corner of bedroom
TR-Did you pre-soak your media in pH corrected solution?=yes