Solar for fishpond

[THAIPHUKET]

To attract insects, lamps pointing downward to the water or submerged lamps?

What is the relevance of the color spectrum?

LED ok?

Pond is the $$size of one Rai

[MJCM]

Maybe helps?

 

https://www.dodsonbros.com/led-lights-flying-insects/

 

 

 

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What light is attractive to insects?

Humans can see light wavelengths in the electromagnetic spectrum from 400-800 nanometers (nm), which ranges from violet to red in color, but does not include ultraviolet (UV) light at 350 nm. Insects can perceive light in the 300-650 nm range, but prefer light that is between 300-420 nm which includes UV light. A light’s UV output is probably the most important factor in its attractiveness to insects. Since most insects are attracted to UV light, this is why most ILTs (Insect Light Traps, including bug zappers) utilize UV/blacklight bulbs as their source of attraction.

 

Insects generally see 3 colors of light, Ultraviolet (UV), blue and green. Bright white or bluish lights (mercury vapor, white incandescent and white florescent) are the most attractive to insects. Yellowish, pinkish, or orange (sodium vapor, halogen, dichroic yellow) are the least attractive to most insects. When white incandescent bulbs were all that was available, the advice was to change them to yellow incandescent bug bulbs. Yellow and “warm white” bulbs tend to be more like sunlight and are less attractive to insects than “cool white” bulbs that have a more bluish tone. Red bulbs are even less attractive to insects than yellow, but red provides little visible light to humans and it carries an “undesirable” social stigma from decades ago.

In addition to the color or wavelength of light, insects are also attracted to the brightness and to the heat from lights. The greater the bulb’s wattage rating, the brighter the light and the greater the drawing distance. Also, the greater the wattage, lights that use glowing filaments (incandescent, halogen, etc.), generate an increasing amount of heat. Cool lights that generate light from flowing gas (LED, sodium vapor, mercury vapor, fluorescent, etc.) generate less heat.

 

 

 

 

 

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Are LED lights attractive to insects or not?

Because most LED lights don’t emit UV light and generate little heat, they tend to have little attraction to insects. However, some insects may be attracted to one or more of the light colors used in the color mix used to produce the LED’s “white” light. While insects are attracted to light, LED lights give off little heat, and also emit the wrong colors of the visible light spectrum for most insects, resulting in that minimal numbers of insects are attracted to them.

 

 

[Encid]

My sister-in-law uses a simple 220v fluorescent tube light mounted on a pole above a bucket.

She goes out to the farm on the motocyc at dusk for an hour or so.

She always gets a good catch...