Coquilles d’huître pour bassin - 5KG par sac POSE_DANS LE SOL When the lid is open

When the lid is open

Non-slip handle

A useful side effect is the suction of warm surface water

before and after each dosage

Coquilles d’huître pour bassin - 5KG par sac POSE_DANS LE SOL When the lid is openOyster shells help to maintain good GH+ and KH+ values. These oyster shells have a stabilizing effect on the KH and PH values. KH indicates the carbonate hardness of the water. Many people think that if their tap water is harder, it won't cause problems for the KH and pH of the water. KH works a bit like a buffer for the acidity (pH) of the water. Fish, plants and the biological filter "consume" the water hardness (KH). If the water is not changed