I have 3 different lights right now but I am thinking about changing to a whitish sand substrate from my black and I was wondering on what type of light will give me that blueish glow that's almost like a blacklight. I bought a black light fort tank but the luminescence isn't enough to light up the entire tank. I read that the actinic lights are the ones that saltwater tanks use to have that effect and I was wondering what to do
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