Device for generating a low effect, spatial effect in aquaria or uninterrupted (10) consisting of a light source (1) and a surface (2), which as a result of the light source (1) is illuminated, wherein the surface (2) which deviates from the vertical in the form of a parabola is formed, wherein the opening of the parabola to the light source (1), and wherein the origin of the parabola on the lower edge of the corresponding aquaria - or uninterrupted disk is located, wherein the surface (2) a diffusely reflecting or mat surface.
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