• Ryan1989

Hello everyone! I'm making a small reef tank with dimensions 40*40*45 (height). I'm planning the lighting. The profile will be 33 cm. The question is how many diodes do I need? So far, the plan is: 6 pieces of 3 watt 20000k 6 pieces of Royal Blue (460-470nm) 3 watt 6 pieces of UV (395-400nm) 1 watt Am I planning too much?

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?