CPC C12M 21/02 (2013.01) [A01G 7/045 (2013.01); A01G 33/00 (2013.01); C02F 3/1294 (2013.01); C02F 3/202 (2013.01); C12M 29/06 (2013.01); C12M 31/02 (2013.01); C12M 31/08 (2013.01); C12N 1/12 (2013.01); C02F 2103/20 (2013.01)] | 20 Claims |
1. A method for providing light deep into liquid disposed inside of a container, the container including a water inlet, a water outlet, and a water-tight lid configured to enclose the container, the method comprising:
using a light conductor, at least partly submerged in the liquid, to conduct a narrow-angled light beam from a light source disposed outside of the liquid to a point inside the liquid inside the container, the light beam having an intensity high enough to prevent growth of algae on a surface of the light conductor inside the liquid where the light beam escapes the light conductor; and
injecting a stream of bubbles into the liquid wherein the stream of bubbles intersects and scatters or diffuses the narrow-angled light beam escaping from the surface of the light conductor.
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