Quote:
Originally Posted by Rice Reef
Quote from Marine Depot
Usage Guidelines - One Radion fixture is comparable to one 250w metal halide
- Generally, one Radion fixture should be used per 40 gallons (150L) of water volume.
- Approximate surface coverage is 24x24 inches (60x60cm).
Does this refer to water volume in the tank only and if talking about just tank size, for a 90 gallon should I go for three? Really like what I see and seriously considering switching over from MH to LED now.
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If you are talking about the 3W Cree LEDs that are everywhere now a handy way to work it out is your tank LxHxW (all in inches) divided by 324. That will give you the number of individual LEDs recommended. Although that fixture has red and green LEDs in there too which are not factored into that formula. Their usefulness is still to be determined.