Just a note - Any bulb behind a glass shield (DE bulbs) will always (and obviously) lose more PAR than the SE bulbs. I've seen a lot of par measurements taken or compared without the glass shield... its great to see you made note of the inclusion of the shield in your comparison.
Cheers,
Chris
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No more tanks  - Laying off the ReefCrack for awhile!
Cheers,
Chris
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