clean my fuel tank? (newbe)

hello guys,
I just changed my fuel filter, and it was DIRTY... looks like it was having a bad case of diarrhea out the back end.

happily my car is idling and starting better now. I dont know how long the filter was in there but it was soooo dirty..

I'm wondering if I should take some steps to clean my fuel tank? I plan on adjusting fuel gauge sending unit soon anyway, should I do something while im down there?

thanks