On the product page:
http://www.lightobject.com/18Lm-278GPH- ... -P403.aspx#

"How to use:
-Submerse or Inline "
However the description states:
"Note: this pump is not a submersible type. "
The use drawing shows submersible.
So which is it? Submersible or Not? Please advise.
Thank you.