Until recently I never used a wave maker. I started keeping salt water about 18 years ago. There was nothing like that out there, at least not in my price range. My fish and corals did fine. Currently In my 2 foot tank I use one of the power heads like you have. In my 3 foot tank I use 2 of them on opposite ends. Both of those are bare bottomed so there isn't a blowing sand issue and the fish seem to like the high flow. In my 6 foot tank I had 4 but recently switched two out for wave makers and a controller. I do get sand moving around in my 6 foot with all the flow.