It all depends on how much water movement you want in the tank. Let's say 3-5x turnover. 55 x 5 = 275 gph. now we look at head height. I'll guess 5 feet because i don't know how tall the barrel is. So at 5 ft of head needing 275 gph....I would say this one:
Quiet One 2200.
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+4585+9849&pcatid=9849
Now get started and take lots of pics for us.
Quiet One 2200.
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+4585+9849&pcatid=9849
Now get started and take lots of pics for us.