Coralife Deep Six Hydrometer Air pump The primary source of nitrogenous

The primary source of nitrogenous compounds in an aquarium is waste

harmful ammonia and nitrite build up from fish waste

Higher decibel rating

Easy and flexible positioning

Coralife Deep Six Hydrometer Air pump The primary source of nitrogenousThe re designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other flat surface when taking salt readings. Wide range specific gravity meter Coralife's Hydrometer takes a true water sample at six inch depth Easy to read and accurate this specific gravity meter is designed to give temperature