Aquarium

Testers that Fit in your Pocket

Take accurate and reliable measurements with our portable testers that go where you go.

pH

Keeping your aquarium pH stable and in optimal ranges reduces stress on your fish, helping them resist disease and tolerate other stressors.

Salinity

Monitoring the salinity of artificial seawater is crucial so as not to create saltwater with an improper salinity level, as it could stress marine life.

Temperature

Aquarium temperature is often the first thing many aquarium owners test for as it is critical for maintaining healthy metabolic functions in fish.

SHOP ALL AQUARIUM TESTERS

Checker® Handheld Colorimeters for Aquariums

Checkers are small, handheld colorimeters that provide higher accuracy results than typical chemical test kits. Offering improved technology, these portable colorimeters make measurement hassle-free with their simple design and easy to follow instructions.

See All Checkers

Professional Reef Test Kit

Monitor the health of your saltwater reef aquarium with the Reef Professional Kit for Alkalinity (dKH), Calcium, Phosphorus (ULR phosphate), and pH.

Accurate

Remove subjective results and guesswork by confidently testing with digital equipment.

Tailored

HIREEF was specifically created with products for use in saltwater reef aquariums.

Complete

This reef testing kit includes everything you need, including solutions and accessories, so you can start testing today.

Learn More

Simple. Original. Smart.

HI12302

HALO® Wireless Field pH Meter

$165.00

Upgrade to a wireless pH testing experience for better quality.

Our HALO® Wireless Field pH Meter features a durable PEI body and spherical sensing bulb making it ideal for measuring the pH of water in tougher settings. Take direct pH and temperature measurements using your smartphone or tablet.

Buy Now

$Digital refractometer for seawater analysis. HI96822$

Take the guesswork out of your salinity readings.

HI96822 Digital Refractometer for Seawater Analysis $180.00

Take the guesswork out of your salinity readings.

HI96822 offers a simple way to quantify the concentration of dissolved solids in your saltwater aquarium - a measurement that can influence the health of your fish. It only takes one device, a small sample, and two seconds to measure your salt water.

Buy Now