Hagen Nutrafin Kh Reagent Refill A7831{L+7}

Nutrafin Kh Reagent Refill Is For Use With Nutrafin Carbonate And General Hardness Test. Carbonate Hardness (kh) Levels Need To Be Tested On A Regular Basis Because They Fluctuate Over Time And Can Negatively Impact The Ph Balance Of The Aquarium Water.