point actually was that a 2 foot t5 tube puts out more than enough light to grow the same plant that a 4 foot t5 can because the total lumens are not all in one area and a 2 foot t5 of 28 watts produces 2,900 lumens nominal and a four-foot 54W T5HO lamp is 5,000 lumens
2900 lumens in a 2 foot long tube is actually more than 5000 lumens spread out along a 4 foot long tube and would have no less ability to grow the same plant under it
---------- Post added at 12:34 PM ---------- Previous post was at 12:29 PM ----------
Quote:
Originally Posted by Merlyn
That's ok, you're right and I'm right also. I get your point, but you missed mine. BTW, I guess you don't worry about cost efficiency because if you overamp your bulbs they fade out quicker = UNefficient cost wise and I'll not argue that point with you.
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actually I do not over amp my lights at all....I run a electronic ballast that can run anything from a 48 watt to a 98 watt set of two bulbs and I run two 65 watt tubes off each ballast ....I do build my own lights and they work great a pl type bulb 4 1/2 inches long and 8 inches wide putting out 65 watts of power driven by a ho electronic ballast