I think it is probably because VHO actinic is the best looking actinic light and PC the worst! I would even go NO actinic over PC actinic. The color of VHO is much nicer and it will make corals fluoresce much more which is the reason I ended up chosing it for actinic instead of T5 in my MH retrofit. I haven't used daylight VHO so I don't know how it would work with a VHO-only hood.
- Chad
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Returning to the hobby after an eight year absence.
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