If you order a TLF - you'll need media (gfo, and carbon, if you want [you'll have to change the media a little more frequently if you split the reactor with two types of media, but you'll also get the added benefits of carbon]), 1/2" I.D tubing and a pump.
The pump, ideally, would be something very small - 20 to 40 gph, but if it's a slightly larger pump, that's ok, because the TLF reactor comes with a ball valve to control flow.
Taken from MD spec's: "Recommended flow rate: 20-30 gph for 130 grams PhosBan, 30-40 gph for 200 grams."