wtb lighting for 20 gal

[Austan]

my girlfriend decided to set up a 20 gallon tank and needs a light for it. eventually she would like to put some corals and a clown in it. oh ya the tank is 20l x10w x24h so a 18-20"light would work.
Thanks
Austan

[reefrandy]

i have a coralife 20 inch pc light with a 28 watt 50/50 bulb it is 2 months old i paid $45 plus shipping i would $30 lmk if u r interested thx