"solar filter"

Complete Equipment for 5- to 10-Gallon Aquariums

Use this cone-shaped fine-mesh nylon net to let water pass while you filter out plankton.

Formalin Preserved

Clear examples of a key method of identification.

It's easy to grow plants

A genuine stone chondrite meteorite and a 150 million year old Sauropod bone fossil.

A collection of some of the more popular forms of coliphage. The successful culture of coliphage requires growing in the appropriate host bacterium (available separately)

Which environment is more appealing?