LED lights

[Ron99]

Originally Posted by StirCrazy

the life of the 5mm will be very good, and they don't need cooling to get that life. but like you said there is no par to speak of.. they are about the same PAR output as a NO T12 bulb from my testing about 7 years ago.

this light are good for FOWLR or FO tanks, not anything with coral.

Steve

Well, it all depends on how well ventilated the housing is on those units. 5mm LEDs will suffer from heat too. it's just that thermal management of high power LEDs is more critical because they put out alot more heat. But a tight, enclosed fixture with 180 5mm LEDs in it could potentially build up heat and reduce the life of the emitters. And you can't really use heatsinks and fans to cool the plastic type LEDs.

[StirCrazy]

Originally Posted by Ron99

Well, it all depends on how well ventilated the housing is on those units. 5mm LEDs will suffer from heat too. it's just that thermal management of high power LEDs is more critical because they put out alot more heat. But a tight, enclosed fixture with 180 5mm LEDs in it could potentially build up heat and reduce the life of the emitters. And you can't really use heatsinks and fans to cool the plastic type LEDs.

doesn't matter at all, I had potted 5mm leds that have been running for 4 years 24/7 the heat production from a 5mm at 3.7 volts (rated input) is nill. the ones I have arew potted in the middle of 1.5 X 1" clear acrylic potting material. I actuly threw them out when I moved as I was doing an exparament to see how long submersable leds would last in a waterproof enclosure.

Steve