metal halide?

[paja 55gl]

hi i just upgrade from 55gl to 120gl reef tank and i have 2 175 MH
but i wanna buy new lighting, what is better 2/250 MH or 2/150 HQI
or 2/250HQI for 120gl reef tank with mix corals.

thank you

 

[boxfishpooalot]

Almost always has HQI put out more par(light for growth) than the standard. I would go for HQI 250watt.

 

[mg426]

That seems to be the general thought now a days.