For sale a used but in great shape Blueline 55 HD pressure rated external pump. 1" inlet and outlet. I purchased this from Champion and have had it running my skimmer for about 6 months. Few signs of wear - in great shape. 125$. Here is the link to champion's website to the same pump.
http://www.championlighting.com/prod...cat=485&page=1
Thanks for looking.
PM me with interest.