
Keeping an aquarium is relaxing and fascinating, and API brand is here to support you in this new endeavor! Whether you’re a seasoned fish keeper or a first-time aquarium owner, you will love using our products as you start or maintain your ideal aquarium. With over 50 years in the industry as aquarium experts, API brand is here as your trusted source of aquatic expertise and offers an extensive line of high quality aquarium products, produced with the goal of helping you make a better underwater world.
We are proud to present our full range of aquarium products, from water conditioners and food to testing and fish remedies, all of which will help you establish and maintain a healthier, clearer aquarium and safer water conditions for your fish. Click your aquarium type below for specific products geared toward your tank.
Click your aquarium type below for specific products geared toward your tank.
Featured Products


REEF MASTER TEST KIT

pH DOWN™

pH UP™

PROPER pH™ 6.5

PROPER pH™ 7.0

PROPER pH™ 7.5

PROPER pH™ 8.2

pH TEST KIT

pH TEST & ADJUSTER KIT

HIGH RANGE pH TEST KIT

AMMONIA TEST KIT

CALCIUM TEST KIT

COPPER TEST KIT

GH & KH TEST KIT
