Test Kits

Red Sea KH/Alkalinity Pro Test Refill Kit
Enough for 75 tests

Replacement reagents for the HI736 Phosphorus Ultra Low-Range Checker® HC

Copper must be monitored in an aquarium or a pond when used as a treatment for parasitic infections.

Reagent refill for Red Sea Calcium Pro Test Kit.
Enough reagent for 75 tests.

Advanced titration test measuring the level of buffers in your reef aquarium, with exceptionally high accuracy of 0.05 meq/l (0.14 dKH)

NO3 | PO4
High accuracy colorimetric comparator tests for the exceptionally high accuracy measurement of Nitrate and Phosphate.
For all Reef Systems.

Aqua Medic pH4 test fluid to correctly calibrate your pH electrode.

The Hanna Marine Alkalinity Checker^® measures alkalinity in dKH units, using a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation.

This calibration standard is ideal for users who need to calibrate their conductivity meters. HI70024P is a premium quality 35.00ppt marine salinity calibration standard that is NIST traceable and…

Red Sea’s user-friendly Calcium Marine Test Kit provides a quick and reliable measurement of calcium in your aquarium to an accuracy of either 15ppm or 30ppm according to your needs.

A dual test kit includes an accurate (1 dkH/0.36 meq/l) titration test for KH and a colorimetric test for pH

The kit can perform approx. 60 measurements.

Reef Factory Level Keeper is a device that helps you to maintain a constant level of evaporated water in your marine aquarium.

Monitors the pH level in your marine aquarium.

KH Keeper Plus meets the highest standard for measuring KH values in your marine aquarium.

HI98319 is a digital salinity tester designed specifically for saltwater aquariums that displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.)

Advanced titration test measuring the level of calcium in your reef aquarium, with exceptionally high accuracy of 5 ppm

Advanced colorimetric test with comparator, measuring the level of Nitrate in your reef aquarium, with exceptionally high accuracy of 0.12ppm NO3

Advanced titration test measuring the level of Magnesium in your reef aquarium, with exceptionally high accuracy of 20 ppm

Red Sea’s colorimetric Phosphate Marine Test kit provides a quick and reliable measurement of Phosphate in your aquarium to an accuracy of 0.1ppm PO4.

Use the Aqua One Glass Hydrometer to measure the density of salt within your aquarium.