I have a 24" 4 bulb ATI powermodule for sale. This is the older style before they incorporated LEDs. The fixture was bought new by me and has only been used for 18 months. Everything works well and fixture is in very good shape. Fixture has blue plus and coral plus bulbs with less than 6 months use that I will include with local pickup. $250 local pickup OBO in Southwest Florida (Naples/Bonita Springs/Fort Myers area)