X 3 or more on horizontal nipples. With this batch of Banty chicks, about seventy, I just had to introduce them to it as soon as they could push the plunger. Got rid of all my vertical (drippish) nipples and I don't use any thing. With a bucket heater, these work year round. Clean water, can not beat it. eBay has the best prices I do believe, also available on Amazon. They all come from the same person/place.

Best to you and your birds,
RJ
Best to you and your birds,
RJ