General guideline for UV is 1-watt per 10 gph flow, and enough flow to turnover tank 2-3 times per hour.
*** Coming back for edit...
Found your tank size, 55-gal right?
I would recommend an 18-watt UV, running at 110-180 gph.
Vodka is used as a source when carbon dosing to reduce nutrients in a system. It is just used in the Elegant Corals technique to increase a food source for the other bacteria that are introduced into the system to basically clean the tank out. The technique worked for me...but it is very specific on the steps to perform and pH must be monitored very, very closely during the treatment.
