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#21
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![]() Quote:
the lumen are the real intensity a lamp (real light to get out of the bulb) They said 90W equal 400w but not 400w of MH bulb they more often compare to incandescent bulb who are energy wasted. kelvin rated is the color of the lamps. an watt are the power consumption HID (hight intensity dicharge) for mercury vapor, sodium,and metal halide are the best economy savingway to light anyting thats require lot of light. That why any big commercial area is ligth with those lamp, you would never see a Home Depos light with any kind of fluorescent for $ reason that said it alway depend on where do you want to go whith your reef if you dont want to keep animal that require big intensity of light it could be an option to put conpact fluorecent but to save the most $ I will go more regular like a GE super daylight at 3$ each and overdrive it by electronique ballast or a ice cap and suplement it by actnic 03 that way you could change all your buld every six monts for very less $ dont forget that those conpact are gone a loose their initial intensity probably very fast and shift color in less tham one years never forget that No fluorescent could never give you the full spectrum of a MH buld and the beautifull color that they give to you tank . IMO lightning is a great part of a good looking reef I will never buy a 125$ coral an put them under a light that made them look like crap. see you Stephane |