I felt as if I needed to add the light so they could get warm enough to come out and get their food and water. Thankfully the temps are up a bit now and I can remove that except for maybe during the morning since I have the brood heater.
		
		
	 
I do this too, low wattage heat light over feed/water station, for the first couple days after hatch....make sure everyone is eating drinking and moving ok. 
Live and learn...chickens have a huge learning curve, 
like getting a sip of water out of a fire hose....your face will get wet, but a towel will take care of that.
Here's my notes on chick heat, hope something in there might help:
They need to be pretty warm(~85-90F on the brooder floor right under the lamp and 10-20 degrees cooler at the other end of brooder) for the first day or two, especially if they have been shipped, until they get to eating, drinking and moving around well. But after that it's best to keep them as cool as possible for optimal feather growth and quicker acclimation to outside temps. A lot of chick illnesses are attributed to too warm of a brooder. I do think it's a good idea to use a thermometer on the floor of the brooder to check the temps, especially when new at brooding, later I still use it but more out of curiosity than need.
The best indicator of heat levels is to watch their behavior:
-If they are huddled/piled up right under the lamp and cheeping very loudly, they are too cold.
-If they are spread out on the absolute edges of the brooder as far from the lamp as possible, panting and/or cheeping very loudly, they are too hot.
-If they sleep around the edge of the lamp calmly just next to each other and spend time running all around the brooder they are juuuust right!
The lamp is best at one end of the brooder with food/water at the other cooler end of the brooder, so they can get away from the heat or be under it as needed. Wattage of 'heat' bulb depends on size of brooder and ambient temperature of room brooder is in. Regular incandescent bulbs can be used, you might not
 need a 'heat bulb'. 
If you do use a heat bulb make sure it's specifically for poultry, some heat bulbs for food have teflon coatings that can kill birds. You can get red colored incandescent bulbs at a reptile supply source. A dimmer extension cord is an excellent way to adjust the output of the bulb to change the heat without changing the height of the lamp.
Or you could go with a heat plate, commercially made or DIY:  
http://www.backyardchickens.com/a/pseudo-brooder-heater-plate