A Gravel Vacuum is a vital tool for protecting a thoroughly clean tank. With time, debris accumulates inside the gravel, affecting drinking water good quality. A gravel vacuum, which include Lee's Gravel Vacuum with Hose, facilitates economical cleaning 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... https://pearlaquatics.my/author/sushant/page/9/