overdriving T5's

[bader]

i am going to set up a 75g rr tank for mixed reef probibly no sps and was thinking about building a canopy with 4 overdriven T5's but i need to know how to wire them for overdriving

 

[scsinet]

You use a ballast that's designed to overdrive the lamps and wire them up normally according to the ballast's instructions.
You can't simply change wiring around in a normal fixture to get overdriving.

 

[bader]

how would it work with the icecap 660 do you just turn them to drive vho or what

 

[reefraff]

You just wire the 660 according to the wiring diagram on the ballast. That being said unless you are raising clams anemones or SPS overdriving T5's on a 75 is a major waste. Just 4 normally driven T5's with Ice Cap reflectors will give you more intensity than the majority of 175 watt halide setups would over that same tank.