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View Full Version : photon V2 48 vs 2 x 400w radiums


wrott
02/11/2016, 11:01 AM
Hi,
If I switched lights from 2x400w radiums for the photon v2 48 over my 4' 120g, should I start at 100% or would the photon even be close to PAR?
thanks, rod

Reef_Breeders
02/11/2016, 03:24 PM
Hi Rod,

The Photon 48-V2 is the equivalent of about 500watts of mh, I would recommend 2 units if you want to be near your current output, however one will work on a 120 gallon tank about 8-10" off of the water.