"micro tube racks"

Formaldehyde-free rats. Available in vacuum packs.

Fast and easy-to-use, this kit contains two dropper bottles for accurate dispensing of test solutions, non-staining test tube with snap cap, and instructions. It comes with enough solution for 130 tests and can be used in either fresh or salt water. Range: 0–8 ppm ammonia.

Screen Aquarium Top
It features an inset metal screen in the center to easily convert your aquarium to a terrarium. You can even add large plastic tubes at the access holes to turn it into a gerbil run. It also accommodates a light strip.

Sparkling ¹/₂" single cubic crystal in 1 x 2" matrix. Spain.

Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.

Complete Equipment for 5- to 10-Gallon Aquariums

View the beauty in sponge structure.

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

Economical starter pack of meteorites and impactities.

This economic collectors' set features eight different genuine meteorites and impactities.

This economic collectors set features 12 different genuine meteorites and impactities.

A genuine 70 million year old dinosaur egg shell and a 150 million year old dinosaur bone fossil.

Get Superior Performance from Unobtrusive Devices

Hatchery kit comes complete with a base, a piece of airline tubing, three packets of hatch mix and instructions. All you need is a small air pump, light source and an empty 2L soda bottle.

A simple and elegant betta tank.

Ideal tool for aquatic ecosystem studies. Collect periphyton samples with ease using this specialized sampler, perfect for water quality and aquatic ecosystem studies.