All living things is a relatively good brand, they have lots of products, so I am going to only list the ones that worked for me.
All living things 4 oz bottle is a nice size, but it can get chewed, and doesn't fit well inside a metal holder.
All living things 4 oz bottle is a nice size, but it can get chewed, and doesn't fit well inside a metal holder.
This all living things bottle is eight oz, and doesn't fit in a tank well either. good for toppers though.
The all living things aquarium bottle is nicely connected to the aquarium. Specially designed for tanks, it is nice, but the clip can break, and is rather expensive for it's poor quality. Drips a lot, 5 oz.