The American Marine Pinpoint pH Monitor is an affordable unit featuring .01 resolution. The Pinpoint pH Monitor is sold complete with probe and calibration fluids (9 volt battery not included).

Apogee Instruments Full Spectrum Light Meters & Quantum Sensors are high-end underwater PAR measurements meters that apply the sensor's immersion effect correction factor to the meter readings through firmware. <

We no longer carry the CoralVue Alkatronic & Mastertronic. We just have the Alkalinity Reagent and Mastertronic Syringes.

Wide variety of Milwaukee pH, ORP, Phosphate, Conductivity, Dissolved Oxygen, Light & TDS testers, monitors & controllers.

Magnetic probe holders from Neptune Systems, SpectraPure and IceCap.

We have a wide range of Aquarium Pharmaceuticals (API) Test kits for reef, fresh and saltwater aquariums. They are sold either as packages with multiple test needed specifically for reef, freshwater or saltwater aquariums, or with specific tests such as calcium, pH, nitrate, etc tests.

With Fauna Marin Multi-Reference Solution, you can test your home test kits under accurate conditions. The Reference Solution is the first to be based on a saltwater matrix and is quality tested using Fauna Marin's ICP-AES testing machine.

The Hanna Handheld Colorimeter Checkers eliminate the effort of matching a result to a color chart by delivering a direct result digitally.

5-Way Test Strips, 6-Way Test Strips and Ammonia Test Strips from Lifegard Aquatics. Can be used for saltwater and freshwater tanks, and for ponds.

The Red Sea Pro Test Kits are very accurate test kits for reef and saltwater aquariums. Calcium, Magnesium, Nitrate, Phosphate, KH/Alkalinity & Algae Control (Nitrate & Phosphate).

The Salifert Aquarium Test Kits are very accurate test kits for reef and saltwater aquariums: alkalinity, calcium, magnesium, phosphate, potassium and kh/alkalinity.

The Seachem Alert Series Aquarium Testers are easy to use testers that are placed in the aquarium and give a continuous readout.

The Seachem Multitest & Reef Status Aquarium Test Kits are test kits for ammonia, copper, nitrate, nitrite, iron, phosphate, pH, alkalinity, iodine, iodide & magnesium carbonate.