submersible fluorescent light

i am wanting to build this without the $189 price tag. i have found a site with the plans and pvc fittings, here , but not saving much money there either. anyone got any ideas?
i will be running on a 12v battery

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Sandisk1duo8 years ago
The easiest way to do this would be to get a HUGE amount to green LEDs and stuff them in a clear plastic tube, get the proper resistors soldered to the LEDs
bigbeardan1983 (author)  Sandisk1duo8 years ago
i thought about led's, but the main thing is the fluorescent light attracts plankton, that attracts baitfish, that attracts the fish i'm trying to catch
. What is producing the light shouldn't be important; the spectrum of the light produced is what counts. . I don't know much about plankton, but I'd be willing to bet a nickel that they aren't that particular about the color of the light. Judging by the links you posted, green works best.
bigbeardan1983 (author)  NachoMahma8 years ago
yeah, green is the last color absorbed in the water, so u get better lighting
oh, ok
. Excellent idea! Low voltage, low power, and maybe a smaller package (depends on how many "a HUGE amount" is).
maybe some of those 1 watt ones, one shining in each direction
. My first thought was that 4-5 high-power LEDs might do the job, but, for omni-directional use, a HUGE amount, all pointing in a different direction, might work better in an high turbidity environment. But then again, maybe the turbidity would help disperse the light. . Not motivated enough to do any research. heehee
you could fill the tube with some sort of translucent gel or get a couple LED light strips and stuff them into the tube
NachoMahma8 years ago
. All you need is two PVC caps, a length of clear/green-tinted PVC, and a watertight fitting for cable entry through one of the caps. You can probably find the parts locally for less money than what the greenlightfishing site charges. If your hardware store doesn't have the watertight cable fitting, try an industrial electrical supply. . BTW, fluorescent lights run at pretty high voltage - the 12V supply will be stepped up inside the light fixture by the ballast (electrical, not the nautical type). Be very careful when handling the unit when it is wet.
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