I have a 135 Gal. and everything will be in a 170 in a week or so. Tank looks quite bare to tell ya the truth. I just took the oscar back to the store yesterday (he was just in my tank to heal) and in return got the biggest golden algae eater i've ever seen. Someone brought it in so the girl gave it to me but its at least 4" pushing 5" and I got a columbian cat as well.