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

Has anyone heard anything about the Maxspect led lights? It seems interesting especially for that price.

http://www.fish-street.com/maxspect_...ategory_id=118

Stupid Orbitech.


Sorry, just throwing that out there :wink:

I hear you brother :lol:


They look alright but I have a couple of concerns which would keep me from buying one. Firstly, they are not adjustable. You can't dim the LEDs or the blue and white separately. to adjust brightness or colour temperature. secondly, i don't really like the approach of using a few really high wattage LEDs rather than a good array of 3 watt emitters. That will lead to some really bright hotspots and areas of extremely high PAR that could bleach some corals right under those emitters and then the PAR will drop off alot more outside those hotspots. May be okay if you want to put your high light SPS right under those LEDs and then lower light stuff in other areas of the tank.