Uniclife Aquarium Wave Maker for 30-60 Gallon Fish Tanks 1058 GPH Adjustable Circulation Pump with Controller and Strong Magnetic Suction Base Submersible Power Head for Fresh and Salty Water its from amazon
Ok, so that's a traditional wave-maker. It's important to understand the difference in what you're buying here. I will try to explain, but it may be best to consult the BRS video about different wavemakers and flow patterns to understand thoroughly.
A traditional wavemaker blows out water in a cone shape, that shape gets bigger as the water gets further from the wavemaker and eventually dissipates. So typically, there ends up being a ton of flow directly in front of it for some distance (determined by design) and it dissipates as it travels across the tank, where the water hits the other side of the glass and radiates outward (think of a hose being sprayed against a wall).
A gyre on the other hand shoots a sheet of water across the top of the tank, it's a thin but high velocity sheet, when it hits the other side of the tank, it hits the wall and then moves down along the wall, hits the sand and moves back across the tank along the sand. This is known as a Gyre and where the pump gets its name from.
The 2K pump puts out around 1849 GPH but is controllable (just like your pump) The fact that it shoots across the top of the tank first though means that high flow corals should be placed at the top, and lower flow at the bottom, and it also makes it so your sand doesn't get blown around.
As I stated previously, I had your tank (The Fluval Flex 32.5), I recommended the pump and the settings because that's the same pump I had and the same settings I used. I tried Sicce XDC's, Nero's, and others in that tank, but unless I was willing to buy 4 traditional pumps, there was no way I was going to be able to have the flow I needed for the tank to not have dead spots in the back. The Gyre took care of the deadspot issue all by itself.