I believe you said that you are using an aquarium for a brooder. I don't know where you are or any other details, but I also believe the brooder is your problem. Go to a grocery or appliance store and pick up a large cardboard box. I use puppy pads for the first couple of days, they give good footing, are reasonably cheap, and easy to change. My babies usually start eating in the first few hours, I sprinkle the gamebird starter on the floor to get them started & something to pick at. I put about a teaspoon of ACV in a quart of water, its not necessary, but has worked out for me, never give chicks cold water. Some people add a vit mix to the water . Make sure your brooder is predator proof and well ventilated without allowing a breeze directly on the chicks. Make sure your brooder is large enough for them to be able to move out from under the lamp (in this weather a light bulb should work, but use whatever keeps the temp under it right), and at first small enough so they don't get so far away from the light that they can't get back under it if they need to. The chicks will usually find a comfortable spot and sleep for the first little while, that's normal. I'm very sorry you are having problems and hop this helps.
