TDS-EZ Water Quality Tester is as simple as 1-2-3. Calibration is easy: Simply press and the on/off button, place the probe in a calibration solution (included) and adjust using a mini screwdriver (not include). Accuracy is good enough +/- 3%.

The Pocket Expert Guide offers a quick reference for identifying, buying, and keeping more than 500 popular species. Designed as a compact but authoritative handbook on the fishes most often seen and kept by marine aquarists, this widely acclaimed Pocket Expert is a must-have reference for all saltwater hobbyists and professionals.

Easy, quick reference guide to the most common, and some less common, marine invertebrates used to stock reef aquaria. As with all aquarium livestock, researching the needs and quirks of invertebrates before purchase is extremely important. Descriptions include maximum size, recommended tank size, feeding requirements, compatibility with other organisms, tips for captive care and propagation, and other helpful hints.

Eric Borneman offers an authoritative, comprehensive, and fully illustrated guide to appropriate aquarium species, including a diversity of soft corals, as well as popular and rare large-polyp and small-polyp stony corals. More than 700 world-class photographs and text reviewed by leading coral biologists and coral keepers guides the reader through the selection and husbandry of hundreds of species.

Corals A Quick Reference Guide. By Julian Sprung is a comprehensive field guide for aquarists, divers and naturalists. Nearly 700 beautiful photos with descriptions, range, and the correct pronunciation of the scientific names. 240 pages, hardcover. The most practical and accurate reference in a single affordable volume.