Aquatic Reef Systems
- Offers reverse osmosis systems and water treatment accessories for saltwater and freshwater aquariums.
- http://www.purelyh2o.com/

Buckeye Field Supply
- Supplies for the marine aquarium enthusiast, with a focus on reverse osmosis and deionization products.
- http://www.buckeyefieldsupply.com/

Aquarium In Old Town
- Offers JBJ lighting products.
- http://theaquariuminoldtown.com

Reef Mania
- Acrylic reef supplies include protein skimmers, sump and reactors.
- http://www.reefmania.net

Barr Aquatic Systems
- Providing custom reef equipment for salt water systems: Protein Skimmers, Reactors, sumps, hang on tank (HOT) refugiums, waste collectors and overflows.
- http://www.barraquatic.com

Soakinwet
- Offers Mini chillers for saltwater aquariums up to 75 gallons, Digital controllers, water pumps and flexible tubing.
- http://www.soakinwet.com/

Eco Aqualizer
- Manufactures mechanical saltwater conditioners.
- http://www.ecoaqualizer.com

Hamilton Technology Corp.
- Offers metal halides, compact fluorescent, vho, pendant, reefsun, deluxe lighting systems for reeftank, salt water, and freshwater fish tanks and plant tanks.
- http://www.hamiltontechnology.com/

Total Care For Aquatic Life
- Offers test kits, diagnosis guides, medicines, water additives, filter systems, and pond supplies. Comprehensive explanations of common maladies and recommended cures.
- http://www.waterlife.co.uk/

Aquamasters.com
- Aquariums, supplies and filtration systems. Also pond and water purification equipment, and marine supplies.
- http://www.aquamasters.com/

Cole-Parmer
- Distributor of scientific products, instruments and chemicals.
- http://www.coleparmer.com/

Super Feeder
- Automatic feeders.
- http://www.super-feed.com/

Ocean Currents
- Maker of wave-making and current generating devices for aquariums.
- http://www.ocean-currents.com/

Aqua FX
- Selling test kits and aquarium filter systems utilizing reverse osmosis and deionization.
- http://www.aquariumwaterfilters.com/

Easy Life International
- Development and manufacturing of fluid filter medium for aquariums and ponds.
- http://www.easylife.demon.nl/se.htm

Aquatic Lighting Systems
- Metal halide bulbs and ballasts, and retrofit kits.
- http://www.aquaticlight.com/

Aquariumpros.com, Inc.
- Aquarium equipment and supplies. Site also features many informational and interactive features for the aquarium hobbyist.
- http://www.aquariumpros.com/

Reefgeek
- Supplier of salt water aquarium supplies.
- http://www.reefgeek.com

Tropical Fish Store
- Custom acrylic aquariums, stands and complete aquarium systems.
- http://www.tropicalfishstore.com/

Marine Technical Concepts, Inc.
- Manufacturer and seller of aquarium filtration equipment.
- http://www.marinetechnical.com/

Neptune Systems
- Water monitoring and control instruments, and software.
- http://www.neptunesys.com/

Lifereef Filter Systems
- Aquarium filters, custom made available. Also water pumps, wave makers and calcium reactors.
- http://www.lifereef.com/

Lazar Research Laboratories Inc.
- Instrumentation to laboratories in the areas of chemical analysis, biotechnology, environmental monitoring, and industrial processing.
- http://www.lazarlab.com/

Aquarium Hobbyist Supply
- Supplies compact fluorescent lighting kits and bulbs.
- http://www.ahsupply.com/

Wet / Dry Filters by Skylab
- Offers wet / dry filters and supplies.
- http://www.wetdryfilter.com

Aquarium Instruments
- Products and supplies including instrumentation, high flow reef filters, water purification and lighting.
- http://www.aquariuminstruments.com/

Alita
- A variety of magnetic and rotary air pumps, multipurpose water pumps and other aquaculture supplies.
- http://www.alita.com/