+3 I am in love with my Tunze as well. I have the 6206 tunze wave box in my 90gal and it has a 1.5-2" wave at all times and it is silent. Everything in my aquarium love it. Also I'm not sure why but since I have had my wave going as hard as it has my torch coral is reaching out 8-9inches. I do not know if this is common but it looks amazing!