sera gH Test Kit 15mL Freshwater Aquarium Total Hardness
$10.99
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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.
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