just started my cycle have been reading all posts learned so much love it.90 rr 100lbs lr 100 lbs ls 30 gl sump 4 inch sb 220 super skimmer cl aqualight 2 6045 tunze powerhead.wish me luck... http://s171.photobucket.com/albums/u309/dansie315/?action=view¤t=.my_first_widget.pbw