A Gravel vacuum is an important Resource for protecting a clear tank. After some time, debris accumulates while in the gravel, impacting water top quality. A gravel vacuum, including Lee's Gravel Vacuum with Hose, facilitates effective 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... https://pearlaquatics.my/product/nt-lab-swimbladder-100ml/