I've heard good and bad things. Most of the bad stuff concerned the sweeping mechanism quiting after a short period of time. I really like maxi-jets for their quality and reliability. For a 29, I'd recommend 3 powerheads. Put 1 near the bottom in the back and aimmit across the back of the tank behin your lr to prevent detrius from settling back there. I have my other two on opposing sides of the tank, 1 at the top blowing across the top of the tank towards the other side (my sps love this), and the 2nd one on the other side at the back, aimed towards the front of the tank. All of this creates cross-currents and the corals seem to really love it. Good luck.