A Gravel Vacuum is an important Device for retaining a clean up tank. With time, particles accumulates in the gravel, influencing drinking water good quality. A gravel vacuum, such as Lee's Gravel Vacuum with Hose, facilitates successful cleansing without having disturbing your fish and decorations. 优点是该软件能保存原始数据的所有属性不会丢失，缺点是没有注册的话，不能进行批量处理，但... https://pearlaquatics.my/7-ways-to-keep-fish-pond-clean-healthy/