Since our herd is so small, we went with 2 small black rubber troughs. They hold about a week's worth of water at a time. I've been checking for cleanliness and making sure they hold a cool temperature daily. Every couple days I add a little water to top it off and once a week I dump and scrub the algae out. I haven't used any bleach yet but I also haven't been able to get all of the buildup removed. ARGH!
Do you have experience with using fish in your livestock tanks? I'd love to hear about it in the comment section below!