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I would vote Gyre once they build better quality units. Within a month, all 4 of my propellers broke, and no, snails/debris did not cause it. I watched 2 break after hearing a weird noise. Props were off balance, and bound, then snap. Love the idea of the pump, and agree there were ZERO dead spots in my tank running about 50% (48x24x24). However, it is a cheap Chinese product, and it showed. If they beef up the props, and get tighter tolerances in the bearings, I would use this over my Vortechs. 2 MP40's on my 120 right now, and the random flow created cannot be emulated with a single Gyre pump.
There is a lot missing out of this statement. Which model and when did you buy it? The new xf-130's are of better build quality. Plus they improved the mounting system from the earlier 150's. This is the first time im hearing of any problems with either of the 2 units.
Once again, the above post does not include what model and time of purchase. Was this on the 1st release of the 150?As for issues with my gyre, I can not use it on the reversing mode, where it runs forward, then changes direction and runs backwards. On my particular gyre, it locks up, sometimes in 5 minutes, sometimes 12 hours later. I came home to no flow, with a locked gyre. Has anyone else experienced this problem on this particular setting?
With all the diving I have done in the ocean, I haven't really ever been on a reef that had any turbulence similar to what people try to create with all their pumps in the tank. I have been on a LOT of drift dives that utilized the current (in one direction) to go across the reef. On top of that, the turbulent water throughout the tank does literally nothing for the corals. Turbulence at the corals skin is where there is benefit. This happens with gyre flow as it gets whipped around the coral. There are tons and tons of vendors who utilize gyre flow in their raceways to grow out their coral.I understand the concept of the gyre, but haven't bought into it. I have three mp40 on my 120 and they create such a random flow i don't think the gyre could duplicate. The ability to control with the apex is a another big plus of the mp.
As for the new revolutionary quiet drive, it isn't enough for me to upgrade. Heck with the price drop now on the regular mp, I am considering buying a couple just to have on hand.