suggestions for controlling that blue - green stuff…

[Magnum Man25 140]

so, i have some blue- green stuff in a tank, this tank also has black beard algae…

there are lots of videos out there showing the slime build up, sometimes quite thick…

mine is less slimy, like an algae layer on the rocks in the substrate… I don’t think I’m special , and mine is ok… I think it’s just an earlier “infection”… I have a few questions…

cleaning it up seems easy enough, would circulating the water through a UV light kill off the CB that is loose in the water, after being stirred up during cleaning, before it redeposits???

I’ve heard that red lights are one of the causes… over this tank I have one of my 1st sun rise / sun set lights, and it begins and ends in reds, and is white most of the day… wondering if I refigure out how to program it, and turned off the reds, if that will help prevent reinfestation??? my newer lights come on with blues, and not reds… that should be better???

this is it today…

 

[gwand24 141]

so, i have some blue- green stuff in a tank, this tank also has black beard algae…

there are lots of videos out there showing the slime build up, sometimes quite thick…

mine is less slimy, like an algae layer on the rocks in the substrate… I don’t think I’m special , and mine is ok… I think it’s just an earlier “infection”… I have a few questions…

cleaning it up seems easy enough, would circulating the water through a UV light kill and of the CB that is loose in the water, before it redeposits???

I’ve heard that red lights are one of the causes… over this tank I have one of my 1st sun rise / sun set lights, and it begins and ends in reds, and is white most of the day… wondering if I refigure out how to program it, and turned off the reds, if that will help prevent reinfestation??? my newer lights come on with blues, and not reds… that should be better???

this is it today…
View attachment 378083

Blue light is worse for algae overgrowth compared to red light, but they both promote growth. Blue light has a higher frequency so it penetrates the water deeper towards the substrate.

 

[Magnum Man25 140]

I had read somewhere a while back, that red spectrum light is particularly conductive to growing cyanobacteria… this is coincidentally the only tank I have running that still uses red spectrum light… I have several that use blue, in fact one has shaded blue ( tons of pothos vines between it and the tank ), that is on all night like moon light…

 

[gwand24 141]

I had read somewhere a while back, that red spectrum light is particularly conductive to growing cyanobacteria… this is coincidentally the only tank I have running that still uses red spectrum light… I have several that use blue, in fact one has shaded blue ( tons of pothos vines between it and the tank ), that is on all night like moon light…

Here is what AI says about moonlight.
Moonlight is essentially reflected sunlight, but its "address" on the color spectrum is more complex than it appears to the naked eye. While we often perceive it as a cool, silvery blue, its actual physical properties are quite different.

1. The Physical Spectrum (Warm and Red-Leaning)​

Physically, moonlight is slightly warmer (redder) than direct sunlight.

• Reflectance: The Moon’s surface is composed of dark, volcanic rock (regolith) that reflects longer wavelengths (reds) more efficiently than shorter wavelengths (blues).
  
  
• Color Temperature: Moonlight has a color temperature of approximately 4,100 K, whereas direct sunlight is typically around 5,500 K to 6,000 K. In the world of lighting, a lower Kelvin value like 4,100 K is actually "warmer" and more yellow-white than the "cooler" blue-white of midday sun.

2. The Perceptual Spectrum (The "Blue" Illusion)​

The reason you likely think of moonlight as blue is due to a biological phenomenon in the human eye called the Purkinje Effect.

• Cones vs. Rods: In bright light, our eyes use cones, which are sensitive to color. In the dim light of night, we switch to rods, which are much more sensitive to light but cannot "see" color well.
  
  
• The Shift: Rods are most sensitive to the blue-green end of the spectrum. Because the light is too dim for our color-detecting cones to function fully, our brain interprets the faint light captured by our rods as having a bluish or silvery tint.
  
  
• Contrast: This effect is amplified by the deep blue or black of the night sky, which provides a high-contrast background that makes the Moon’s light appear "cool."

 

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There is starting to be an over reliance on the accursed AI here on The Great TFF Forum . I fart in its general direction !

 

[gwand24 141]

There is starting to be an over reliance on the accursed AI here on The Great TFF Forum . I fart in its general direction !

Don’t be a Luddite. It’s a useful tool that will only getter more useful as the technology matures. Like most new technologies it can be used for good or evil purposes.

 

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Don’t be a Luddite.

Down with all Kings but King Ludd !