I have the Ecco, so I can't help from experience, but these links may help, and welcome to the forum!
http://www.plantedtank.net/forums/equipment/31054-eheim-2215-help-me-set-up.html
http://www.plantedtank.net/forums/equipment/26555-setting-up-eheim-2213-a.html
http://www.fishforums.net/index.php?showtopic=148354
http://www.aquaticplantcentral.com/reviews/showproduct.php/product/2/cat/16
http://www.plantedtank.net/forums/equipment/31054-eheim-2215-help-me-set-up.html
http://www.plantedtank.net/forums/equipment/26555-setting-up-eheim-2213-a.html
http://www.fishforums.net/index.php?showtopic=148354
http://www.aquaticplantcentral.com/reviews/showproduct.php/product/2/cat/16