LOL, I love these boards. I have been running powerheads for more than 10 years and people are telling me that I do not know what I am talking about. Well, if you want more power, put an airhose on it because when you buy a powerhead brand new, it comes with an airhose with an adjuster to adjust the power on a powerhead. If you leave it without an airhose, you will get less power.
A question I ask myself, do you own any powerheads? I run about 12 powerheads on 5 of my fish tanks. A airhose are on all of them because thats when you get the most power.