The Rocket Plasma should be the best plasma to use from vegetative through to flower simply because of the color temperature of the bulb. Except for the Alphalite, which uses the same bulb and plasma technology as the Rocket Plasma. The color temperature for the Rocket Plasma/Alphalite is suppose to be around 3000k (
http://www.rocketplasma.com/rocketspecs/ ) and the lowest color temperature Gavita has I believe is around 5600k for the 41.02 emitter (
http://www.gavita-holland.com/index...ing-plasma/item/gavita-pro-300-lep-ac-eu.html ). I can't seem to find a color temp for the 41.01 emitter at the moment. All of the plasmas can be used through flower but. You will probably get better flowering results with the Rocket Plasma/Alphalite plasma lamps simply because of the lower color temperature bulbs. Even Gavita acknowledges that their plasmas are best used to supplement HPS or for vegetative stages.
"So in conclusion:
- We recommend the 01 version as most efficient to complement HPS light during the generative phase and suitable for short vegetative cycles
- The 02 version is also suitable for a combination with HPS, but has a better quality than the 01 for vegetative development, so it is best utilized in a pure vegetative environment or for sunlight simulations
- Use one Gavita Pro 300 LEP in combination with a maximum of 1200W HPS lighting for a better color spectrum which results in healthier plants, higher quality and a better yielding crop"
http://www.gavita-holland.com/helpdesk/download_attachment.php?kb_att=1
Since the Alphalite and Rocket Plasma have the same plasma technology you are left choosing between the two I guess. If it were me making a choice right now I would probably choose the Rocket Plasma. Simply because the company is more active online and I have seen multiple instances with the Rocket Plasma in grower's hands. The Alphalite website is the only legitimate information I have seen on it
http://www.alphalite.com/US/index_us.html . I will admit that I do like the Alphalite website more than the Rocket Plasma website though.