PAR ratings of 400 watt HQI bulbs

[jlinzmaier]

Does anyone have any basic par ratings of 400 watt HQI bulbs??

[reefergeorge]

No one can answer that. There are way too many variables.

[jlinzmaier]

OK, let me clarify.

I'm looking into purchasing new 400 watt HQI bulbs.

The most common brands of 400 watt HQI bulbs that I can find are Ice Cap, SPS South Pacific Sunlight, and Coral Vue.

Of those three brands - does anyone have any general information about which one has higher PAR ratings? This is with the understanding that typically the higher K bulbs have a lower PAR rating. If we compared the brands at equal K ratings, and the same ballasts, which one typically has a higher PAR rating?

[fkshiu]

http://www.reeflightinginfo.arvixe.com/