CF's vs NO overdriven

[BCOrchidGuy]

Steve, thanks as always for your input, can you tell me why VHO for actinic though? I can get a 2x65watt PC unit and exchange one of the tubes for a 10,000k and keep the other a 50/50. Why would a VHO actinic be better and if I went that route, what ballast would you recommend for a 24 in VHO tube a workhorse 5? The 24" VHO tube is a 75 watt, so I'm assuming the WH5 would be the best match. If I decide to do the 90 as a reef in the future can I go with a workhorse7 or 8 and still run the 75 watt at it's rated 75 watt then if I need I can run two 110 watts at the max rating for that ballast?

Doug