asthenosphere. The asthenosphere is the ductile part of the earth just below the lithosphere, including the upper mantle. The asthenosphere is about 180 km thick.(Image courtesy of Massey University). Share this page: 1  Facebook. 2  Twitter.he asthenosphere is the ductile part of the earth just below the lithosphere, including the upper mantle. The asthenosphere is about 180 km thick. (Image courtesy of Massey University). Share this page: 1  Facebook. 2  Twitter.
Noun. 1. dirty pool-conduct that is unfair or unethical or unsportsmanlike. behavior, conduct, doings, behaviour-manner of acting or controlling yourself.1  Facebook.2  Twitter.. dirty pool-conduct that is unfair or unethical or unsportsmanlike. behavior, conduct, doings, behaviour-manner of acting or controlling yourself. 1  Facebook. 2  Twitter.
Backwashing is the act of cleaning your filter after itâs collected dirt and debris from your pool. It works by sending pool water backwards through your filter and out the waste or drain port. In this guide, Iâll teach you the steps to successfully backwashing a DE filter, and how often you should be doing this.