Originally Posted by turboTSI
what is the difference between the 250w u mention and the 260w I mentioned except that I get 10more watts?
It's not the wattage. It is the depth penetration of the lights. MH
lights penetrate deeper the PC
lights will. You can get a MH
light under 300, but you will really need to supplement with another light such as VHO
. I have 2x175 5500K MH
and 2x110 VHO 03
on my 90 Gal
. That gives me 6.3 watts per gal
, but you really can't use the wattaage per gallon measurement.
On a 55 Gal
you can keep a good amount of corals with the PC
lights because the tank is not that deep.