I have an Aristo VCL 4500 head for my Omega D2v I use a metrolux II for a timer. The VCL 4500 is a nice head. you get a controller box that allows you to use the blue or green lites independently or you can mix them together. I would recommend taking the cover off the head before drilling the hole for the probe. The instructions are ok not great. I think it is a better head than the zone VI by a country mile.