When a light's description says something like, '30 watts, equivalent to 120 watts,' what exactly does that mean? I see this a lot on compact fluorescent packages. But for lighting a fish tank, should you assume that it's 30 watts or 120 watts? I think this is in comparison to incandescents, but since those aren't really used much anymore in planted tanks I don't know what would be recommended.
Thanks for any info!
Thanks for any info!
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