Beam angle - Gives information about the width/narrowness of the light emitted by the light source. A value of 30-60° is typical for spotlights and is rather more suitable for targeted lighting. At least 120° should be adopted to provide light over the greatest possible area.
Ampere (A) - Is the unit of measurement of electrical current. We are interested in the value of the current because it is important for deciding on the correct mains adapter. An LED bar rated at 24W operating at a voltage of 12V requires a mains adapter capable of supplying at least 2A (24W / 12V). A power reserve of 10% should always be included in the calculation, therefore a 5A mains adapter should be used to power two 100cm LED bars.
ClearSealing - A special production process in which a special high-performance silicone gives the LED bars a watertight seal. UV and temperature stable! Although this process results in longer production times and higher manufacturing costs, the characteristics it produces cannot fail to impress.
CRI - See Ra
IP67 - The ingress protection type indicates the suitability of electrical operating equipment (in this case our LED bars) for different ambient conditions as well as the protection of people from potential hazards it provides during its use. IP67 stands for: Protection against temporary immersion, and complete protection against contact and therefore it fulfils the current VDE requirements for aquarium lighting.
Kelvin (k) - Is the unit of measurement of colour temperature, i.e. gives information about the light colour.
Shimmering effect - This describes the interplay of light and shadow on the bed of a body of water that occurs in nature through the combined action of sunlight and wave motion. The main requirement to create this effect is a targeted and powerful light source such as LED; the light from a conventional fluorescent tube is very highly scattered and hence unsuitable. The intensity of the shimmering effect depends on the distance of the light source from the water surface and the movement of that surface (waves).
Cooling body - In our context, this consists of an aluminium strip that has been specially designed and developed to suit our LEDs. It is an integral component of our LED bars. The LEDs are permanently and directly attached to the cooling body during the manufacture of the bars, so that they are capable of passive cooling. The heat emitted from the LEDs is absorbed by the aluminium and conducted away in a direct and efficient manner. In spite of their high output, no other means of cooling is required! However, our PRO² LED bars allow you the option of benefiting from the advantages of water cooling systems.
LED - A light-emitting diode (LED) is a semiconductor that emits light and has the electrical characteristics of a diode. If an electrical current flows through the diode in the forward direction, it emits light of a wavelength that depends on the semiconductor material and the coating.
LED bar - The LEDs in our LED bars are permanently attached to a passive aluminium cooling body and made watertight with a special high-performance silicone. The number of LEDs depends upon the length of the LED bar.
Light bar housing - Is a practical means of accommodating the LED bars and can be mounted on the sides of the tank, on the frames around the top or suspended from the ceiling.
Lumen (lm) - Lumen is the unit of measurement of luminous flux and gives information about the whole of the light that the LED lamp emits on all sides. It describes the brightness of the LED lamp.
Nanometer (nm) - The colour of an LED is also expressed in the form of a wavelength. The wavelength describes the distance between two consecutive points moving in phase on a wave. This distance is measured in nanometres (nm). The wavelength of the visible light colours increases from blue to red, the visible range being between 370 nm (violet) and 750 nm (red).
Mains Adapter- A stabilised direct current mains adapter is required to provide power to your LED lighting. It must output a voltage of 12V DC. The current it must supply, the number of ampere (A), is determined by the connected consumers, in this case the LED lamps.
Ra - The colour rendering index (CRI). This value describes how well the colour emitted from a light source is rendered. The colours from different light sources appear different in the event of deviations in the light spectrum band or the light colour. The maximum value of 100Ra describes the best rendering, i.e. no deviation from the ideal reference value, which means the colours of the illuminated object appear as they do in nature. Aquarium lighting should be selected to achieve at least 80Ra. Our LEDs intended for use as main lighting achieve up to 90Ra.
A comparison: Fluorescent tubes frequently have the Ra value encoded on the tube. A printed-on value of 740 equates to an Ra value of at least 70 (first number) with a colour temperature of 4000K. 850 equates to an Ra value of at least 80 with a colour temperature of 5000K.
SMD - Stands for surface-mounted device: In contrast to other LEDs, SMD LEDs are not connected by wires but are soldered directly onto the printed circuit board.
Watt (W) - Is the unit of measurement of power (energy use per unit of time) in the International System of Units (SI). In the context of LEDs, this value is used in the calculation of electricity consumption and electricity costs. Example calculation for a 100cm LED bar rated at 24W:
24W (0.024kWh) x 10 hours (operation) x 365 days x € 0.25 (electricity price) = € 21.90 per year