Thanks for all the advice. I'll try out some different stuff too see what works best.

As for the bottle size in the 10 gallon tanks, they are 12oz glass bottles. The tubs have 32 oz plastic (outside of tub with just sipper in tub).

I'll try raising them up as I think maybe I've had them too low thinking the babies couldn't reach. Probably why the adults look funny trying to drink out of them as well. lol

Thanks again all for the advice and I'd love to see some pictures bulldog.