Premium Salinity Refractometer Aquaponics we recommend a design flow

we recommend a design flow rate below 40 gpm)

Store Pond Wizard Algaecide in its original container only

vitamins and minerals required by Koi and Goldfish in a balanced diet

Link to Vessel and Parts:

Premium Salinity Refractometer Aquaponics we recommend a design flowLargest and sharpest scale display available. Calibration ring for simplified calibration. This refractometer features a magnified scale for better visual accuracy. Other features include solid aluminum construction, a rubber gripped body and temperature compensation between 10 and 30C (50 to 86F). To calibrate, simply loosen the handset screw, place a few drops of water on the prism, turn the calibration ring until the shadow line is at zero and