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Pearling why and when?

Jaap

Member
Joined
30 Sep 2011
Messages
1,068
Location
Nicosia
Hello,

1. When do you guys see pearling? My plants only pearl when I make a huge water change.

2. Why do the pearl? What is the meaning of pearling? Does it mean that the plants photosynthesise at a faster rate?

Thanks
 
Plants (and algae) pearl when the water around them is so saturated with oxygen that the oxygen they produce as a result of photosynthesis can't dissolve in the water.

I think you get loads more pearling at water changes because tap water is at a higher pressure and therefore has more dissolved oxygen (and CO2).

For my current tank, on non-water change days, there is usually pearling about an hour after lights on, especially near the surface. Lower plants take longer to show pearling.

When I take photos of my tank in the evening, I turn the LEDs up to 11 and the plants begin to pearl like crazy. The response is immediate. So overall I think you need loads of CO2 and light for plants to pearl.
 
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