IceCap 660 and 39w T5 bulbs

[Roamer]

I have a quick question for folks. I have heard that the IceCap e-ballasts (430 and 660) will over drive T5HO bulbs. But I have not been able to find any good numbers on how much.

So, assuming I put four 39w 36" long T5HO bulbs on an IceCap 660, what will it drive them to? 50w? 60w? Something else? How can I calculate this?

 

[cmaki]

I believe that they will be ~60W on a icecap ballast

 

[Rich_1833]

I called reef geek the other day about this and was told 55watts.

 

[Kayadad]

They have talked about this on the icecap forum. Icecap says it is around 60 watts.

I will be running this setup.

 

[David Grigor]

Keeping the bulbs cool with fans running across the bulbs lengthwise is very key to all T5s and especially when overdriving. No sense using the additional electricity if you not getting the full benefit.