36 watt uv light

[helpme74]

I have a 75gal reef ready tank fish only for now i.m setting it up friday for the first time 80lbs live sand . Do i have to run my uv light all the time turbo-twist 36 watt. when i start my tank for the first time should i turn my uv light off?I'm also going with a mud sump with chaetomorpha macro algae

 

[thangbom]

run the tank with the uv off first. afther the tank is cycled then you turn on the uv. ( reason why u dont use the uv when you cycle is because it will kill most organism (sp?) in the water collum.but first you need the grow bacteria in the water collum that then grow in the rock and sand.