re: Tomato plants from seed growing too tall and leggy?

If you are growing plants from seeds under a grow light, you need to NOT run the light 24 hours a day. That much light is making them continually grow 24hrs a day, and it's a slower rate lets them build larger stems. Turn the grow lights off each night or place them on a timer. As stated here, plant tomato plants deep into soil to prevent breakage of stems. Also buy a bag of pyrethrin/cypermethrin garden dust. When setting out young plants sprinkle around the base of the stems to prevent any cutworms from damaging them.