If this is a big concern, look into aquarium lighting with LEDs, where the color spectrum is a constant subject of discussion. I doubt such specialty lighting

If this is a big concern, look into aquarium lighting with LEDs, where the color spectrum is a constant subject of discussion. I doubt such specialty lighting will be subject to regulatory restriction, so it should be available indefinitely (if perhaps a bit pricey), e.g.: > "This combination of LED and phosphor is a proven technology with good performance but not perfect. An obvious disadvantage of this led is the lack of red-related color light components. The color temperature (CCT) of the light emitted by this led is relatively poor and the color rendering index (CRI) is relatively low. Combining YAG phosphors with other materials will increase red luminescence, leading to the availability of “warm” white led plant light, but at the cost of hard-won efficacy. (CRI is a measure of the degree to which an illuminating light source reproduces the color of an object compared to sunlight, whose CRI is 100. Despite the obvious shortcomings, the CRI of an incandescent bulb is about 95. In contrast, cold white led plant lights usually have a CRI of 70 to 80.)" https://www.mokolight.com/blog/led-grow-light/phosphor-works-for-aquarium/ https://www.mokolight.com/blog/led-grow-light/phosphor-works...