The Planted Tank Forum - View Single Post - PAR vs Distance, T5, T12, PC - New Chart
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post #3 of (permalink) Old 04-04-2010, 09:46 PM Thread Starter
Planted Tank Guru
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,015
Spiral CF bulbs are a different breed of light. The ones on that chart are all linear tubes which tend to produce the same PAR for any length of bulb, with the length to be used depending only on the length of the tank they are to be used over. But, spiral bulbs have varying lengths twisted together to get all of the light emitted over one small area. There is a thread in the stickies that I think covers those bulbs as well as they can be, for now.

I have enjoyed working with lights since I worked for NASA many years ago, when I was working on a "bulb" that was a water cooled tungsten arc bulb, using argon as the gas flowing through it. Now, that was BRIGHT!

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