sera gH Test Kit 15mL Freshwater Aquarium Total Hardness
Freshwater Aquarium Total Hardness Test Kit.
Makes it easy to monitor the total hardness.
For approx. 420°dGH.
In case of too low GH values we recommend sera mineral salt. High total hardness levels can be lowered by mixing in R/O water.
For creating soft water we recommend adding sera blackwater aquatan or filtering through sera super peat.
