MH pendant question - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 02-11-2004, 12:20 AM Thread Starter
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Join Date: Feb 2004
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OK, if you saw my other thread I was asking about lighting for my 54 gal corner tank. From the suggestions there I decided on 175 watt MH pendant.

So my questions are:

What is better 5500K or 6500K?

Is a Coralife bulb better than a no name (Coralife bulb upgrades are about $60) on most sites.

How close to the glass can the fixture be mounted?
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post #2 of 4 (permalink) Old 02-11-2004, 01:46 AM
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Metal Halides should be placed no closer to the top of the tank than one foot. The glass on the tank cover should not be in place as the metal halide will eventually crack the glass with the heat.

I would think that the use of a coral life bulb would not be warranted because of the light spectrum. Coral life bulbs are designed for marine tanks with coral growing in them. What limited knowledge I do have would suggest that a bulb around 6500k would be ideal for your purposes, however I would check with your retailer (assuming this is a LFS) and they should give you the right advice.

Best of luck.

Paul

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90 gallon, CO2 dupla injection, Dupla substrate heating, Dupla Laterite with iron stone substrate, Aquastarlight future 3 x 150 metal Halides, Eheim 2026 pro2's and heavily planted with Discus
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post #3 of 4 (permalink) Old 02-11-2004, 01:52 AM
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rumples,

Coralife is a BRAND name.
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post #4 of 4 (permalink) Old 02-11-2004, 02:12 AM
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Sorry Rex, here in Oz it is a type of bulb too. But should have thought of this. Thanks for the heads up.

Paul

Eheim Pimp Club member #3: Scribe to the Eheim Pimp Club

90 gallon, CO2 dupla injection, Dupla substrate heating, Dupla Laterite with iron stone substrate, Aquastarlight future 3 x 150 metal Halides, Eheim 2026 pro2's and heavily planted with Discus
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