Last year, I posted about the upgrade from single ended metal halides to TwinArc bulbs. I used the same reflectors and ballasts, but could now have 20,000K lighting for a few hours and 10,000K lighting for a few hours, daily. The best of both worlds, right? http://www.reefaddicts.com/entry.php...l-halide-bulbs 10 months later, I knew it was getting close to the time I needed to get new bulbs, and I was really debating what to go with: upgrade to all 400w bulbs ...
Updated 06-16-2014 at 02:58 AM by melev
This is the first part of the daylight period. I've been running the staggered lighting period for a decade now, and don't see why I'd ever stop. Here's the article I shared a few years ago explaining it in detail: http://www.reefaddicts.com/content.p...d-Lighting-why Today I installed two new 400w bulbs and one new 400w ballast. One more ballast and bulb will be added tomorrow, and I'll take PAR measurements to know the difference ...
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