Lol Pete you'e gotta be kidding us? I'm still laughing as I'm typing this. Those plants are worthless. Dump them now and bin the halogen so you're never tempted to use it again. That's up there with the worst cases of stretch I've ever seen.
The pictures of the soil and general area from what I can see look otherwise reasonable. Start germing some new seeds, get a couple of 23watt+ 6500K compact fluorescents like Italiano said and keep them 2-3 inches away. Once they get some foliage energy behind them you can switch to the 600Watt HID and they'll explode.
Start a grow log when you do it so people can help you along the way. In this instance it would have saved you 4 weeks and a few bucks on the power bill.
CFLhydro Reviewed by CFLhydro on . my 4 week old plants lookin sick i have four chronic plants about 4 weeks old grown from and about 5 days ago i started seein little yellow spots on the leaves it seems to have got worse and is covering the leaf. i put a piece of white paper under the plant and gave it a shake, there was tiny little yellow bugs on the paper. can any 1 tell me whats going on plz. i didnt really understand the troubleshooter form but here is what i no: planted in coco soil with nothing added, kept indoors with 20 hrs of light a day, fed with tap Rating: 5