[mike31154]

I use 3 x MP40WES on my 77 gallon which is pretty much a mixed reef. The two on the ends of the tank run anti-sync in Tidal Swell mode limited to about 75%-80% power, while the one on the back glass runs at a lower speed set independently since my tank is fairly narrow. Ideally, I'd prefer to have an MP10 on the back glass, but when I was looking for a used one, all I was able to scare up was another MP40. They all enter night mode together. If you are thinking VorTech, then at least two of the wireless models on a tank your size is the way to go.

On a 90 gallon tank it would be difficult to overkill the flow with two MP40 VorTech since they are so very controllable. You can limit the speed to 25% if you wish and at that speed you would probably barely hear them. Where the sound or noise is more prevalent is when they are ramping from a slow speed up to maximum speed quickly, such as in the short pulse mode. That's fine for creating waves & I've tried that mode, but it gets old pretty quick. A random flow setting using the EcoSmart Tidal Swell or original Reefcrest mode is a lot easier on the pumps, ears and IMO does a better job of mimicking an actual reef environment. In TSM, with a push of a button, you can switch to Nutrient Transport Mode which will kick up detritus & other funk you probably didn't know was hiding in the rockwork. I use this mode usually just before a water change. It's a good idea to 'tune' a wave with your pumps when you set them up, this will make NTM most effective. Another advantage of using TSM is that during the cycle, both pumps are rarely running at the maximum 80% setting at the same time & when they are it's only for a short time. The remainder of the cycle has them running at different speeds anywhere from about 25 to 80%, creating a truly random flow environment throughout the tank.

Even if you don't own a VorTech yet, you can download the user manual from their website. Get ready for a fairly long read, but at the end of it, you'll be well informed on the capability of these pumps. Personally I have no idea why anyone would need a separate controller for VorTechs, the controllers that come with them & their ability to communicate with each other pretty much cover any scenario that I can envision.

I have no experience with Tunze but from most of the info found in forums they are also a great product. Not sure they have quite the flexibility in flow options with their controllers as the VorTechs do though.