UV-C Sterilization Light -VS- Tetraselmis Phytoplankton

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Cory

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Fwiw uvc is very effective against phyto blooms. Pretty much anything that floats in the water is dead.
 
Budmans

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Heres a good visual on what uvc does and how quickly:

 

ichthyoid

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Does running a UV-C 254nm sterilization light completely wipeout my growing and dosing of live tetraselmis phytoplankton?

Is it completely counterproductive wasting time and effort if I ran both UV-C light and dosed tetraselmis?

Hmmmmmm.

This is smthg I want to see for myself.... so I'm running a simple experiment.

Wondering what will happen if UV-C 254nm sterilization light is exposed to live tetraselmis phytoplankton over the course of hours or days.

LIVE tetraselmis from my own home brew station:
20200915_164623.jpg


Seeing if/when the tetraselmis crashes into clear brown water

Live sample (edited, originally had a gatorade bottle but switched to glass crystal per a posters suggestion below):
20200915_172433.jpg


Starting the sterilization exposure. Exposure going to be non stop 24/7
20200915_172504.jpg

Fwiw,
Common grades of glass block 90%+ of wavelengths shorter than ~290 nM.

That includes the glass you have the phytoplankton in.

Glass absorbs even more so at the 254 nM wavelength of your UV lamp. That’s also why the sleeves in UV sterilizers are made of quartz.
 
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Cory

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Uvc doesnt reach earth, its stopped by the ozone layer. Uva and uvb do.
 
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