From urchins, and blennies, to snails what would you say is the best "organic" glass cleaner in a tank? Obviously the best glass cleaner is razor blade or magnetic scraper, but there are a lot of people who also like to have things that help out in the tank. In my opinion snails do it best. They tend to leave less patchy areas and spend much more time on the glass cleaning it. Urchins and blennies do a good job but you can see where their teeth marks are left on the glass which I personally think is cute.
