Learn more about the nitrogen cycle in your eco-bottle (a mini aquarium). The nitrogen cycle in aquariums
More on the nitrogen cycle. The nitrogen cycle in an aquarium (or yuor eco-bottle
This site will help you get started with your research on Platys. Platys
There are many sites yuo can look at. try this one and then search Google for more. More on Platys
What effect does algae have on your eco-bottle? Check out this site for some answers. Algae in your aquarium (or ecobottle)
Here are some other resources that you can't find on the internet: School Library Local Public Library