I purchased a bunch of 24" T8 led tubes on Ebay to replace fluorescent tubes in our apartment common hall lights. It did involve removing the ballasts. Just have to pay attention to what it is you purchase
because the tubes come in at least 3 different flavors; white, soft white along with tubes that have the individual led's visible when powered. The individual replacement tubes are inexpensive.
Heck, they are sooo nice, come creep stole one right off the wall fixture. Scum can be found everywhere