DIY sump

i have a 55 gal reef set up running on a penguin 330 biowheel filter. i want to get rid of that cuz i have too many suspended particles in the water and the water gets cloudy about once a week so im thining the filter is inadequate. i have a sump from a nighbor when i bought the tank from him and it came with the overflow and the return pump. i want to know if haveing just a sump will be enough to filter a 55 gal, the sump looks to be about 10-15 gallons and its made by sea clear. its about 20 in high 30 in long and 6 in wide. i wanted a wet dry but i need something that will be able to hold eonough water so i could put my skimmer and heater inside and be submerged since its air driven. i was wondering if theres a way to make some sort of tower to add to the sump to hold bioballs for filtartion or is that just for culturing bacteria so it wouldnt be nessesary? or if someone could head me in the right direction with links or hint. i dont want to spend much more $ since i pretty much have everything i need. thanks in advance.

well i have all of that, i have atleast 80-100lbs of live rock and about 50lbs of sand, some of the rock and sand was not live but its has been seeded and all is live now so you think that with a skimmer that i put in my sumpi should be good to go?

hmm interesting. i guess ill do that. do you think i should out a light on the sump to keep macroaglea?

sorry, one last question, in the sump i can put live sand and live rock correct? as long as i have some light?