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WH7 ballast (1 Viewer)

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AggieBrandon

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WH7 is fine for the bulbs as Kevin has stated but the bulbs will be under driven a bit. Many people have said they could tell a difference in the brightness of the bulbs when compared with an ice cap. I use the WH7 ballast to fire 2 super actinic 48" bulbs and it works fine for me though. Hope Mikester doesn't read this thread or we will have a WH7 war again :) j/k

Brandon
 
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The O'Workhorse debate...
I actually emailed Fulham asking this very question. They said that the bulbs would be underdriven. You can however run 4 T5's with a WH7 :D . If you are ok with the fact that you are not getting optimal, but good, performance from your VHO, then use a WH7.
Another option goes like this...
The WH7 has 4 red wires. It takes 3 of them to properly run a 110w VHO. With the 4th wire you can run a 54w T5, because you only need 1 wire per T5. So you could have the best of both worlds and not underdrive anything.
 
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The Ice Caps also under driven, That is why they claim the bulbs last longer when driven by Ice Caps.
 
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ShaneV

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Actually IceCap states the bulbs last longer because their ballast starts the bulb more effeciently.

Not sure on VHO, but IceCaps do overdrive T5's.
 
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The only way to properly drive 4' bulbs at VHO levels with a WH7 is to use 1 ballast per bulb, which is not very cost effective (4 x $35 = $140 - might as well buy an IceCap). You can hook them up in parallel as Brandon said, but that will underdrive the bulbs - even more so than the IceCap.

This whole WH7 debate is irrelevant anyway. Just get the new ARO ballast - it WILL drive 2x110w VHO's at the proper level, and it costs the same as a WH7.

http://www.hellolights.com/22elarovhoba.html
 
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yellowbelley

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sorry about that didnt mean to cause a WH7 debate lol
i just wanted to make sure that 2 4ft VHOs would be fired properly
thanks for the replies
 
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