The wavebox is nice, on a tank that size you would need an extension but you don't need it all at once, you would be fine to start with just the 4 6100's. I would place 2 on each side aimed directly across about 6" below the surface. I would use Interval2 at a 6hr interval, use a pulse with that of 100-30% at 3sec. Placement is largely trial and error.