A Gravel vacuum is an important Device for keeping a clear tank. After a while, debris accumulates within the gravel, influencing h2o quality. A gravel vacuum, including Lee's Gravel Vacuum with Hose, facilitates productive cleaning without disturbing your fish and decorations. 本回答被题主选为最佳回答 , 对您是否有帮助呢? 本回答被专家选为最佳回答 , 对您是否有帮助呢? 本回答被题主和专家... https://pearlaquatics.my/tag/fish-pond/