Sera GH Test Kit

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reliably determines the total hardness easy to use supports mineral balance recommended action for too hard or too soft water for approx. 420°dGH measuring capacity Makes it easy t o monitor the total hardnessFor 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. Show more