View Full Version : Par38 Bulb Dimensions
07/05/2011, 12:12 PM
What are the outside dimensions of the 7 LED par38 bulbs?
Also, how many would I want to provide good light for a 30 x 30 x 24 cube. After researching I was planning to go with 5, arranged like the dots on a die. Will this be enough?
07/05/2011, 02:25 PM
The bulb is 4.75" in diameter (each number after the "PAR" in the title indicates 1/8" in diameter).
What are you planning on keeping inside the tank?
07/05/2011, 05:35 PM
It will be a mixed reef. One of the reasons I am looking at these bulbs is that I can do softies, sps, lps and also low light stuff since the lights seem to create more shadows.
07/06/2011, 10:05 AM
With some SPS in there I think you'd need 6-8 bulbs, I'm not sure 5 is going to be enough light.
07/06/2011, 11:32 AM
Also, how long is the bulb? Total length with the socket threads? What about length without the socket threads?
I am building my canopy and need to know the minimum height I can make it without the bulbs sticking out the bottom. I plan to use low profile sockets from HD or lowes. The canopy will hang...so like I said, my main concern is the bulbs are not visible from viewing angles.
07/06/2011, 11:33 AM
With some SPS in there I think you'd need 6-8 bulbs, I'm not sure 5 is going to be enough light..
Is that even with 60* optics. I had planned on those. I don't mind if the SPS has to be in top half of the tank.
07/07/2011, 04:50 PM
It's about 5.5" long with the screw threads, and about 4.5" without counting the screw threads.
Yes, that's based on the 60's.
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