The wavebox has a higher volume pump and adds the force of displacement, on wavebox mode a 6105 will click and as Shawn said, if it produces a wave it will be quite small. It would be best used for directional flow and either a wavebox or a pair of 6261's should be used for a wave, if you are not in a hurry, in the next couple months 6261 will be replaced by 6265 in the wavebox and as a seperate pump.