I finally got my wavebox yesterday but was having trouble tuning it - I did not have a ton of time to play with it so maybe I was being too impatient - with a 6 foot 225 gal tank, am I going to be in the upper 50% of the range of the frequency dial? (just trying to narrow down the range I have to fiddle with) - also could the box being too low make a big difference? I have the water level line on the box about four mm below the water level - thanks -can't wait to get it working tonight!