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JBL Test KH (Recharge)
Update your JBL KH test with this recharge in saving format.
Accurately measure carbonate hardness (KH) with the JBL test.
Carbonate hardness prevents dangerous drops in PH in your aquarium water.
The recommended value is between 5 and 10º dKH.
This test is valid for both fresh and salt water.
NO registration required!
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