I'm not sure exactly how to answer your filtration question because I don't know what kind of filter it is, but I can help you on the feeding part. If you were to go to a lfs
they would probably tell you to purchase Weekend Feeders. Do not under any circumstances buy one of these. They do not work and they end up making a mess in your tank. And sometimes, if you have a pleco, it will stick itself on the feeder and will eat for the entire time. I would recommend going to either Wal-Mart or your lfs
and purchasing an automatic flake feeder. I normally do not ever recommend going to Wal-Mart for fish supplies because of their lack of quality but I noticed today that the lfs
sold the same automatic feeder that Wal-Mart does for twice the price. Six days may be pushing it. I wouldn't recommend anything over 3 if you are really attached to your fish. Some may say that 6 is fine, but just for caution, we don't go over 3.