T5 lighting

[albert_dao]

Here's a bit of a comparrision of some popular metal halide bulbs (all bulbs are SE 250 watts - Source Sanjay's website/Advanced Aquarist):

Iwasaki 6500K - 705 PAR

Ushio 10000K - 495 PAR

AB 13000K 250 - 577 PAR

XM 10000K 250 - 612 PAR

Here's a breakdown of the ATI brand T5's (all bulbs are 3' 39 watts - Source Grim_Reefer/RC):

Sun Pro - 357

Aquablue - 336

Blue Plus - 311

Actinic - 137

I think those numbers are pretty convincing...