Ended on June 30, 2018 at 11:59 PM    Household and Hobby Other United States

The winner will receive a HOG.5 Hang-On-Glass UAS Upflow Algae Scrubber direct from Santa Monica Filtration. You can enter the competition in two different ways – either refer a friend who makes 10 posts, or make 10 posts on the forum yourself. Maximum 5 entries.