he is a little over a foot, maybe 14 inches. Ya that DSB in the trashcan is AMAZING. with all the big fish in my tank i always thought i would have problems, but i have never had a problem with nitrates much, especially after the trashcan. Ever since the addition of that trashcan after about a month, the nitrates have been UNtraceable. i never pick up any luckily, i think it was one of the best additions i have ever done