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  1. J

    overlighting disaster?

    Is it possible that MH 150 w lights left on overnight could cause massive coral deaths? I have a 180 gallon reef community tank. Mostly softies, zoos, lps. Fish, clams, a shrimp, one anenome, etc. Its almost 11 months old. Saturday at 3 pm it was fine. We left the house empty, came back Sunday...
  2. J

    submersible light sensor?

    Does anyone know of any waterproof/submersible light sensor that can be used for measuring exact light intensity and K-scale of light at different spots in the aquarium? I'd like something to measure more precisely how much light reaches the bottom of my tank versus the top, how much more light...
  3. J

    Lens question

    Has anyone had experience with the AF Zoom Nikkor 24-85mm f/2.8-4.0D IF Autofocus Lens for taking aquarium pictures? It has a macro function. Comparisons to prime macros? Alternative lens thoughts? (I have a nikon body). Phyllis, I saw in one thread you mentioned that a sigma lens is not a true...
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