Okay, sounds like you have the food under control. If you are offering them grit small enough for them to eat, the mealworms shouldn't be the problem.
I ask about the heat source because some bulbs have a teflon coating. The fumes given off when the bulb warms up is toxic to birds. If you using the red bulbs sold specifically for chicks that is safe. If not, you'll want to check the packaging to make sure the bulb isn't coated.
I think it would be a good idea to measure the temperature of your brooder; just to make sure they aren't getting too hot. At 2.5 weeks old it should be around 85 degrees. I used a cheap outdoor thermometer from Walmart when I first started and it worked okay.
I ask about the heat source because some bulbs have a teflon coating. The fumes given off when the bulb warms up is toxic to birds. If you using the red bulbs sold specifically for chicks that is safe. If not, you'll want to check the packaging to make sure the bulb isn't coated.
I think it would be a good idea to measure the temperature of your brooder; just to make sure they aren't getting too hot. At 2.5 weeks old it should be around 85 degrees. I used a cheap outdoor thermometer from Walmart when I first started and it worked okay.