filter is not enough. Im guessing you don't have a sump. They are a good idea and can be done just as you are. I`ll post this three part link on them
Everything You Always Wanted to Know About Sumps, Part I by Greg Taylor - Reefkeeping.com
This will give you added water volume plus a place to put your skimmer. IF you don't want a sump or refuge you can get a HOB
skimmer. I used a Skilter Skimmer for a while. Most folks don't like them but it pulled out a lot of skimate for me. Also till you can get all this done PWC
`s are still a way to remove Dissolved organic compounds from the water. Also a lot of folks use canister filters. There are several options here.