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Scrubbing15
11-10-2015, 02:56 PM
I have a 45 watt flood light at 2850K. What size would a one sided screen need to be running on high output (less hours)?

75 gallon tank with 75 gallon sump just rock n 2 clowns atm but been running for a year. About to upgrade lights for coral and will be adding more fish.

Thanks
SantaMonica
11-10-2015, 06:37 PM
Welcome.

Is the light a CFL or incandescent? And if CFL is it real or equivalent watts?
Scrubbing15
11-10-2015, 07:18 PM
Just noticed its not CFL. If my screen is 1 sided 4×6 then what CFL would be best?
SantaMonica
11-10-2015, 08:41 PM
24 square inches would need at least 24 real CFL watts on one side. Could do more. Best would be 2-sided.
Scrubbing15
11-11-2015, 11:45 AM
How do you determine the real watts? I have looked on the packages and only see wattage of bulb (60w only using 13w), 3500k and 820 lumens.
SantaMonica
11-11-2015, 08:30 PM
60 is the equivalent, and 13 is the real.