A Gravel vacuum is an important Software for protecting a clean up tank. After some time, particles accumulates inside the gravel, affecting drinking water quality. A gravel vacuum, for instance Lee's Gravel Vacuum with Hose, facilitates effective cleansing with out 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 , https://pearlaquatics.my/aquarium-maintenance-routine/