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Old 06-30-2005, 04:13 PM   #41
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since the leds are 60 degrees do i have to have them protruding from the light? wouldnt the light blockout the leds if i just had them flush?
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Old 06-30-2005, 11:15 PM   #42
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i believe it won't make a large difference. the light should be emitted at the tip of the led, the viewing angle, is the measement of light leaving the tip and its raidus from the center, if i understand it correctly.
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Old 07-06-2005, 08:18 PM   #43
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i finally got back to radioshck today and got a 4.5v power converted. is that what i need for the powersupply?
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Old 07-07-2005, 12:11 AM   #44
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yeah that will do it, the slight difference in voltage from the calcs, won't make a big difference.
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Old 08-02-2005, 01:16 AM   #45
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What is the best type LED to use. Or better yet what light range is the best to use?
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39 gallon (2yrs) 40lbs live sand. 23 lbs LR (still collecting) , 1 turbo snail, 5 Nasarius snails, 10 blue knuckle hermits, 1 zebra hermit, 1 scarlet hermit, 5 red tip hermits, 1 Green Chromis, 1 Blue Damsel, ? Ricordia, candy cane coral.

135gallon (2 months)
125lbs live sand, 100lbs live rock, 2 175W Metal Halide, 1 175W VHO Actinic (so far). Berlin Protein Skimmer in 40 Gallon Sump. 2 Maxi Jet 1200's. 10 Nassarius, 10 mexican turbos, 10 astreas, 20 Blue Leg Hermits, 20 Scarlet Hermits, 5 Emerald crabs, 5 peppermint shrimp. 1 Copper Band butterfly, 2 False Perculas, 1 Javanese Damsel.
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Old 08-02-2005, 01:30 AM   #46
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5mm - 5000mcd blue leds are about the best ones, based on price / performance, these ones can be had for about 50cents an led, all leds should last somewhere around 10,000 operating hours, if correctly soldered, and has the right circuit driving them.

light range? are you referring to color temp, or viewing angle or maybe total light generated ?
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Old 08-02-2005, 02:49 AM   #47
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I guess I mean the cone shape (some seem to make a bigger footprint on the aquarium floor.) and brightness and also the similarity to the actual moonlight spectrum.
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39 gallon (2yrs) 40lbs live sand. 23 lbs LR (still collecting) , 1 turbo snail, 5 Nasarius snails, 10 blue knuckle hermits, 1 zebra hermit, 1 scarlet hermit, 5 red tip hermits, 1 Green Chromis, 1 Blue Damsel, ? Ricordia, candy cane coral.

135gallon (2 months)
125lbs live sand, 100lbs live rock, 2 175W Metal Halide, 1 175W VHO Actinic (so far). Berlin Protein Skimmer in 40 Gallon Sump. 2 Maxi Jet 1200's. 10 Nassarius, 10 mexican turbos, 10 astreas, 20 Blue Leg Hermits, 20 Scarlet Hermits, 5 Emerald crabs, 5 peppermint shrimp. 1 Copper Band butterfly, 2 False Perculas, 1 Javanese Damsel.
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Old 08-02-2005, 01:31 PM   #48
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cone shap is viewing angle, the angle(s) at which the light leaves the lens, currently i have seen 60, 30 and 20 degree angles, between those 3 i like 30degrees.

brightness - leds are commonly judged on their milli - candela output (mcd) currently there are 2,000 mcd - 12,000 mcd leds out there, 5,000 mcd generates a good amount of light for a moonlight setup. an led at around 10,000 mcd is hard to stare at for longer than 15seconds if that helps you vissualize their output.

leds don't generate light in Kelvin temps yet, and eventually though (3-7 yrs from now hopefully) all leds right now (5mm stock) generate less than 1 watt of output power anyway. what they do is provide some light to the tank, that tricks the animals into thinking its night time, and provides us with just enough light to see all the fish and thier nocturnal behaviors.
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Old 08-02-2005, 05:27 PM   #49
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THanks Jprox, very helpful!
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39 gallon (2yrs) 40lbs live sand. 23 lbs LR (still collecting) , 1 turbo snail, 5 Nasarius snails, 10 blue knuckle hermits, 1 zebra hermit, 1 scarlet hermit, 5 red tip hermits, 1 Green Chromis, 1 Blue Damsel, ? Ricordia, candy cane coral.

135gallon (2 months)
125lbs live sand, 100lbs live rock, 2 175W Metal Halide, 1 175W VHO Actinic (so far). Berlin Protein Skimmer in 40 Gallon Sump. 2 Maxi Jet 1200's. 10 Nassarius, 10 mexican turbos, 10 astreas, 20 Blue Leg Hermits, 20 Scarlet Hermits, 5 Emerald crabs, 5 peppermint shrimp. 1 Copper Band butterfly, 2 False Perculas, 1 Javanese Damsel.
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