Fritz 35PPT Calibration Fluid 37ml cade Solid-state internal & external water

Solid-state internal & external water level sensors

Large: Recommended for aquariums larger than 300 liters

Dimensions (w/o clip) = 1" Diameter x 3

Wifi controller for Keloray AO100 series lights

Nitrifying bacteria can take weeks to naturally establish colonies in new aquariums while ammonia and nitrite can reach lethal levels in only a few days

Fritz 35PPT Calibration Fluid 37ml cade Solid-state internal & external waterFritz 35ppt Calibration Fluid Use as a Reference for any Density Measurement Instruments Simple 2 or 3 drop Application Quickly Calibrate to 35 ppt or 1. 026 sg Pre measured refractometer calibration solution takes the guesswork out of properly calibrating your instrument with no need for expensive or unreliable measuring equipment. A refractometer is essential to the saltwater hobbyist for success. Maintain its accuracy by recalibrating regularly.