You really need to slow down and figure out the right equipment "BEFORE" you set a saltwater tank back up. A seaclone skimmer is just not a good piece of equipment for any size tank let alone a reef aquarium. Fluval filters are only good for chemical filtration on a reef, good for mechanical with regular cleaning (weekly) for a fish only because of the nitrate producing properties.
Depending on size of tank, the least I would recommend is a Euroreef RS skimmer which can be had online "NEW" for $150 shipped. It's a set and forget type of skimmer (still needs cleaning but on a longer schedule). Live rock for biological filtration and some basic carbon filter bags or the fluval if you prefer. You need to setup a more balanced life supporting tank more than anyone. Inexperience can cause problems very quickly, is very costly down the line and frustration that may make you quit the hobby. A drilled tank or reef ready tank is one of the more important thing to think about nowadays as the hobby moves away from simple hang-on tank equipment. You can find one here on the board for a few dollars. You will also have more equipment choices and an easier time hiding things if under the tank. Free tanks are more expensive sometimes if not well thought out.
Make your hobby a pleasent one. Research ...
Depending on size of tank, the least I would recommend is a Euroreef RS skimmer which can be had online "NEW" for $150 shipped. It's a set and forget type of skimmer (still needs cleaning but on a longer schedule). Live rock for biological filtration and some basic carbon filter bags or the fluval if you prefer. You need to setup a more balanced life supporting tank more than anyone. Inexperience can cause problems very quickly, is very costly down the line and frustration that may make you quit the hobby. A drilled tank or reef ready tank is one of the more important thing to think about nowadays as the hobby moves away from simple hang-on tank equipment. You can find one here on the board for a few dollars. You will also have more equipment choices and an easier time hiding things if under the tank. Free tanks are more expensive sometimes if not well thought out.
Make your hobby a pleasent one. Research ...