Yes, in a LPS dominated tank and an SPS dominated tanks. They move water no doubt but I don't think it is as turbulent as the other three companies can do. Yeah you get the water to slush back and forth for what? So you can say its just like the ocean! My tank makes a wave giggle giggle.
My buddy HAD two mp40s in his tank and it was doing ok. He got rid of one mp40 for a wp25. What a difference it made, corals opened up more they swept around more. He wants to get rid of the other mp40 for a wp25.
When he did run two mp40s one was on pulse at 30% and the other on reef crest at 60%. The flow was ok like I said but I kept telling him it was too blah. Bring in the wp25 and two weeks later the tank looks total different color wise and how wide open the coral are now. Flow is extremely random.
Whatever you say, I'm not about to derail this thread with a Chinese powerhead is greater than all higher end powerhead thread...there is a ton of those. You can continue to imagine that a wp25 is better than an mp40 and the greatest thing since sliced bread, I'm not going to waste my time commenting on that point anymore past this.
Your comments have me bewildered though, the most common mode used on a vortech is reefcrest mode (the same mode your friend was using)...which does not slosh water back and forth, it blows random turbulent flow everywhere, it's not designed to make a wave.
Back to the original post and question, I don't know what kind of coral you plan to keep but you can add more flow. My 150 gallon had two koralia magnum8, two 1400 gph koralias, and a powerhead with two 1200 gph heads on it. The powerhead with 2 heads was always on, the magnums switched every 8 hours, the 1400 gph powerheads would switch every three minutes with both of them on for a minute. I replaced all of that with the two mp40s two years ago and was concerned that I was losing flow. The two mp40s seem to make more flow than all of that combined, and even though I could point my other powerheads I still had a lot of dead spots... The mp40s have eliminated that. Also, with the koralias being switched by my apex, they would wear out every six months and have to be replaced, this cost quickly added up. They would either stop working or spin backwards, and made a stray voltage in the tank. I strongly reccomend you look at getting some sort of controllable powerhead, if on a budget look at the jaebo at fishstreet.com, if you want more higher end but cheaper check out some tunze, if you want what I consider the best (personally) save up and get two mp40s...you can find used ones on the forum all of the time for a lot less than new ones, they last a long time too.
The extra powerheads will not hurt anything.