double ended mh bulbs vs screw in type

[Samw]

Originally Posted by StirCrazy

Sorry you were lied to. I though that also but then I tested the output of my HQI driven SE 10000K AB set up against Sams HQI DE 10000K AB and even with the reflectors on I got a higher PAR output from my set up, this got me thinking.

Steve

But those were different ballasts. You had the high powered M80 whereas mine was using only 250W.

But yeah, I checked out Sanjay's link there with Coralvue bulbs and the Coralvue SE bulb also had higher PPFD than the Coralvue DE bulb using the same ballast and same color temp bulb.

http://www.reeflightinginfo.arvixe.com/select2lamp.php