You may have a computer issue of some sort, when I go to the Tetra Pond site and click on the link for the WGP pumps, then the link to the manual, it works.
The depth does not matter, depending on what you are doing with the pump. The deeper it goes, the less pressure you will have going to the filter, UV, waterfall, etc, whatever application it is operating for you. Also, the harder it is to reach for maintenance. Minimum recommended depth is 1 foot.
Date published: 2016-07-18