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Originally Posted by BlkWolfe
Hey Steve
I have pfo HQI ballasts. quite a few people have posted, not this forum, that overdriven radiums turn alot whiter, almost a 12k or 13k. I wanted a little more blue, bring out more color in my corals, just dont want to take a dive with par, but i might not have a choice.
ah well, time for VHO actinics
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when I was running the 250 radium in my tank on HQI I had to shut off the VHO it was so blue.. and I have a 400 radium running on a normal ballast in my garage right now and it isn't 1/2 as blue as the 250 one was.. but I imagin as for eveything else each bulb will vary a bit.
Steve
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