Photosynthesis Active Radiation on Aquascape

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Algae & Plants Photosynthesis Wavelength

The light waves that can be captured by the stomata of the plant ranges from 380nm s / d 750nm. This is called PAR (Photosynthesis Active Radiation). However, chlorophyll a and chlorophyll b, which are crucial in the development of stem and leaf urgently need certain spectrums, as shown below:

take a look at the graph of wavelengths required for photosynthesis chlorophyll a and chlorophyll b ,,

Seen each chlorophyll for photosynthesis has 2 peak wavelength is on the left (dominant blue spectrum) and on the right (dominant red spectrum)

Yellow and green spectrum can be utilized by the Red Algae (black brush algae / BBA, hair algae, thread algae, claodophora, staghorn, etc.) and Cyanobacteria (Blue Green Algae). So by reducing the spectrum we can minimize, prevent and inhibit the growth of algae.

Group Green Algae (green water and Green Spot Algae / GSA) is rather difficult inhibited because this class of algae need light exactly matches the needs of light for photosynthesis taneman high level.

This means that only spectrum approaching the red and blue colors required by photosynthesis ,, more precisely the spectral peaks of photosynthesis are in 4 colors:

- Royal blue (deep blue / dark blue-purple)

- Indigo (indigo / violet blue)

- red

- Deep red (deep red / near infrared)

While the yellow-green spectrum (dominant in white light) is not required or very little use for photosynthesis.

Lighting for Plants Photosynthesis

So what kind of light that can accommodate a spectrum of colors photosynthesis as above?

The answer is yes only lights that produce a light indigo, dark blue, red, and dark red. Well if such lights like a disco Aquascape dong? Lah yes, if only the pursuit of plant growth by optimizing photosynthesis through the light, yes that's what it takes.

But Aquascape not just merely about the rate of plant growth, but also the beauty that caught our eyes. By reading some articles and personal experimentation, I came out with a figure combination of color temperature (kelvin) which optimizes photosynthesis without sacrificing the eye, namely:

20% light yellow (warm white 2700-3200K)

20% of blue light (455nm royal blue - 100.000K)

60% white lights (cool white / daylight - 6000-7000K)

the current technology that is able to accommodate a combination of color temperature just above the LED. For more details, can be read down further:

Want to know the dominant wavelength of the color temperatures of 3200K, 6500K, and 100.000K (royal blue)?

Experiments performed on a combination of three-color LED temperature above, and covered with a thick white paper calendar former ,,,

LED spectrum experiment:

if the white paper in place the right stick LED: