I had a feeling I couldn't use the vertical nipples side mounted. On the pictures I viewed, the side mounted ones had a cross shaped piece just behind the nipple.
Thanks all for the expert advice
I purchased the conventional nipples for mounting on the bottom of the bucket. Can these be used for side mounting or is there another type that is only for side mounting? One of may Americaunas thinks the water bowl is also a foot bath and the bucket idea should solve that problem although...