which bulb gives the best growth, AB Ushio or XM

[stlouisguy]

thanks

 

[DrBDC]

Look up which has the highest par or ppfd is for the bulbs:

http://www.cnidarianreef.com/lamps.cfm

 

[rudeanduncouth]

Also consider comparing the color spectrum of the different bulbs.

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

 

[stlouisguy]

Im not too proud to say Im totally lost on both those sites LOL

 

[sirreal63]

They are good for single ended, us DE guys get nothing. No pretty pics. lol

 

[rudeanduncouth]

<a href=showthread.php?s=&postid=7083110#post7083110 target=_blank>Originally posted</a> by stlouisguy
Im not too proud to say Im totally lost on both those sites LOL

I understand that. To effectively use these sites your need to know what PAR is and how it applies to lighting and with how color spectrums work with absorbtion and what colors you want to come through stronger.

I will try to come up with a link for a discussion on PAR.