Why you should use opaque or colored water bottles

The reason you want to use opaque or colored water bottles, even though they are not always easy to see through, is to block out light or wavelengths of light that create algae in the water. While rabbits should be in indirect sunlight, this is more than enough light to start algae growing in your water bottles which can be a pain to clean. The solution is to sacrifice the convenience of being able to see the water levels clearly and from a distance in order to increase the security of your rabbits health.