To sum this thread up... The bathtub Idea was working... I had gotten to about .1ppm Nitrites in the tub. However, I wouldnt recommend this unless A) You have more than one place to bathe. B) You thoroughly rinse out your tub so there is no soap residue, and C) You find a really good way to stop up the tub so that there are no leaks. I used the plumbers putty to get a pretty good seal, but I still had a very slow leak so Id have to top off the water daily, and add more ammonia/dechlorinator to keep the level up. Unfortunately I didnt continue cycling my media when I moved it to the sump so I ended up starting from square one (the bacteria I grew in the tub died when the media dried out) once I got my tank built....
But then... most people get a filter and a tank at the same time.