I bought two pop bottle waterers from Cutler (the little trough that attaches to a bottle... the birds drink out of the trough). I have it currently in my chicks 'playpen' area they go in once a day for about 45 minutes. Even with red marbles and dipping beaks in, the 3 week old chicks show no interest and won't drink out of it. It is at about the same height as their quart chick waterer in their brooder. It's just silver vs. red. Any suggestions? The took to a new feeder right away, with no problems.