gravel-less tank?

Hi. 6 months ago, I packed up all my fish and flew to a new location. My 120 gal. tank was shipped and set-up first and seed water was added. At that time, I had UGF w/power heads, Magnum HOT, and 2 box filters. The Magnum was not running full-time. The water got cloudy after about a week and pretty much stayed that way despite numerous water changes. I believe the tank was being overfed. About 2 months ago, I bought a pair of fish that ended up infesting my tank with Ick. I foolishly did not have a quarantine tank set-up, which I do now. Most of my fish were over ten years old and could not recouperate. I set-up some temporary tanks and completely broke down my 120. I took all the gravel out, washed everything, and decided to go with 2 Emporer 400 Bio-Wheel Filters because of articles I have read. I am trying a tank without gravel and I am looking for advice. Should I replace the UGF? I have a BGK about 1 1/2 feet long, he's about 12 years old. A spotted Rapheal 8 inches, 10 yrs old, and a Green Irridessent Shark 6 inches, almost 10 years old. Would they prefer the gravel back in the tank? It has been set-up for about 2 weeks currently. The water is starting to get a bit cloudy, and I can see about 10 teeny tiny white worms floating around. Is that a sign I am overfeeding? I have cut back feeding about the last week. There is also a new blue gourami in the tank. Any advice would be greatly appreciated. Thank you for your time.

S.L.

Gravel w/o UGF? Do you mean just a 1/4 inch or so? How much is too much? I cut up a fresh shrimp every three or four days for the Knife and the Rapheal. I put in a dried krill or two every three or four days as well. One of the foods is at night after lights out. I ran the bio-wheels on the tank before I broke it down, then I used one on a temp 29 gal. and one on a established 30 gallon just to keep the bio-wheels going. I used Stress Coat and Stress Zyme and there appears to be a healthy growth on the wheels. Then I used water out of the 30 to fill the 120 and I am hoping it is cycled. Ammonia levels almost non-readable it's so low. Thank you again.
S.L.

Wouldn't gravel w/o filter get dirty quickly? Are two Emporer 400's enough filtration for a 120? "Rollin", do you have pics posted of your tanks I could see? While I like the look of no gravel, my fish seem apprehensive... Especially my knife. I lined a glass hurricane with black background and he's in it, but he doesn't seem to like it as much as his slate tile leaned up against the wall. I bought a piece of black PVC pipe to make him a home, but I didn't realize it would float like it does! All the pics I have seen on this site and most others the tanks have gravel. Am I right that gravel or not requires about the same amount of water changes and siphoning? Thanks again for the info.