A Gravel Vacuum is an important tool for maintaining a thoroughly clean tank. As time passes, particles accumulates during the gravel, affecting water good quality. A gravel vacuum, for example Lee's Gravel Vacuum with Hose, facilitates productive cleaning with no 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/how-do-the-professionals-perform-pond-cleaning-services/