A Gravel vacuum is a vital Device for protecting a thoroughly clean tank. Eventually, particles accumulates in the gravel, impacting h2o high quality. A gravel vacuum, for example Lee's Gravel Vacuum with Hose, facilitates efficient cleaning without having 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... https://pearlaquatics.my/how-to-keep-your-fish-pond-clean/