Frankly if you have a canopy (that is tall enough for MHs) and want the metal halides I'd get a retrofit kit and vent the canopy with some cheap fans.
If the canopy is a shorter one I'd not use it and the Current fixture you linked to would be a good choice.
Except for a few insanely hot days here in the south this year I've not had the MHs cause a bad heat issue in the tank and do not have a chiller.
If the canopy is a shorter one I'd not use it and the Current fixture you linked to would be a good choice.
Except for a few insanely hot days here in the south this year I've not had the MHs cause a bad heat issue in the tank and do not have a chiller.