KORALLEN-ZUCHT Pohl's K-Balance Potassium Concentrate Automatic Elements
Finally, an easy low-cost way to add some of your favorite Zeovit additives to your aquarium! Simply place the Automatic Element in a high flow area of your sump, reactor, or filter, and it will dissolve over time, slowly releasing the proper concentration of additive to your aquarium. They can last up to 4 months, so that means no more dosing from blue bottles daily or weekly.
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