i am at the seedling stage and using CFLs i watered them when i first got them about a week into sprouting and i have only watered them once in a week because they are still moist and damp to the touch so the roots are still getting plenty of water my plants are now about 2 1/2 weeks old. I do have them in a nursery so that might be helping to keep the moisture in but they are doing pretty good.
Hope this helps abit.