Used Two Little Fishies Phosban Reactors 150.

Option Phosguard ($50):
Comes with original package, two used sponges and two new sponges, one used thick flat washer (new style acts as an O-ring) and two new O-rings, used lid, two new and two used rubber elbows, three used barbed connectors, one new ratchet clip, and one new ball valve.

Option GFO ($45):
Comes with original package, two used sponges and two new sponges, two new O-rings, used lid, three used rubber elbows, two used barbed connectors, one new ratchet clip, and one used ball valve.

Option Carbon ($30):
Comes with two new sponges, one used O-ring and one new O-ring, used cracked but epoxy sealed without leaking lid, two used rubber elbows, two used barbed connector, one used ratchet clip, one used ball valve, without original package.