Aquatic Life TDS Tester Pen Calcium & Alkalinity It will accept items such

It will accept items such as mysis shrimp

1 x Aqua Illumination Blade Coral Grow LED - 39 Inch

Sensor diameter: 0

Measure sample volume carefully

Along its back is an orange stripe

Aquatic Life TDS Tester Pen Calcium & Alkalinity It will accept items suchAquatic Life TDS Tester Pen Aquatic Life TDS Tester Pen is a handheld total dissolved solids meter for quickly checking source water, RO water, RO DI output, aquarium preparation water, and other water quality applications. Aquatic Life TDS Tester Pen for RO DI and Aquarium Water Checks This compact TDS meter helps aquarists monitor how much dissolved material remains in water before and after filtration. It is especially useful for checking tap