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Ryan1989
Sara
Length of the fixture:
L = 0.33 m
Calculating total power:
P = (6 + 6)*3 + 6 = 42 W
Calculating specific power of your fixture per length of the profile:
Po = P/L = 42/0.33 = 127 W/m
Looking at the graph:
In total, the temperature of the radiator of your fixture may exceed 60°C, higher than the water temperature in the boiler in operation.
The temperature on the diode chip will be higher. Thus, the LEDs will operate almost at the maximum operating temperature - 85°C. They may burn out precisely due to operating at extreme temperatures.
Gregory
You can install 2 fans on the radiator. And how many watts per liter is recommended for this length of the lamp... (I'll take not 33 cm, but 35)?
Joseph9057
With coolers, it will be -
Regarding the lighting of your aquarium, and accordingly - the number of selected diodes, specifically for living organisms + aesthetics - I can't advise, I haven't dealt with marine setups.
Off-topic: For planted tanks, 0.5W/liter of LED lighting is already quite decent.
Gene1948
With what spectrum and Ra?