4 or 6 bulb fixture for 40 gallon
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4 or 6 bulb fixture for 40 gallon

This is a discussion on 4 or 6 bulb fixture for 40 gallon within the Beginner Saltwater Aquariums forums, part of the Saltwater Fish and Coral Reef Tanks category; --> I am setting up a 40 gallon, 36"x18"x16", reef tank. I am going to keep soft corals and LPS along with a few fish. ...

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4 or 6 bulb fixture for 40 gallon
Old 03-11-2012, 11:45 PM   #1
 
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4 or 6 bulb fixture for 40 gallon

I am setting up a 40 gallon, 36"x18"x16", reef tank. I am going to keep soft corals and LPS along with a few fish. Do you guys recommend I get a 4 bulb T5 fixture (156w), or a 6 bulb fixture (234w)? My only concern with the 6 bulb fixture is that I may have too much light. Not sure if that is possible as I have read mixed opinions about the topic.
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Old 03-12-2012, 12:11 PM   #2
 
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Same tank I have, you should be fine with the 4 bulb if all you wanted to keep is soft and LPS, the tank is pretty shallow, would probably be pushing it if you wanted to try your hand at some SPS though. I have the 6 bulb fixture and keep a mixed soft/LPS/SPS without issue.
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Old 03-12-2012, 12:13 PM   #3
 
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One other thing to note is the Tek Light fixture I have has two switches, one for the two outside bulbs and one for the 4 inside bulbs. You could always just start with that fixture (not "that much" more money) and if you are worried about too much light run only the middle 4 bulbs, that way you always have the option of "enabling" the other 2 lights in the future.
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Old 03-12-2012, 01:00 PM   #4
 
4 lamp unit is sufficient. 2 being white light and 2 being actinic for color rendering. 6 lamp unit if you plan on getting SPS.
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