250W and 400W HQI
Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: Equipment
Forum Description: This is the place to ask question about reef equipment.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=24709
Printed Date: October 31 2024 at 8:27pm
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Topic: 250W and 400W HQI
Posted By: unixnum1
Subject: 250W and 400W HQI
Date Posted: March 26 2008 at 12:05pm
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I was told by someone that 400W ballasts will also drive 250W HQI. Does anyone know about this or tried it? Thanks ------------- 220G with 30G sump, SPS/LPS. RoboTank Controller. ===================================== why am I always the stem? 
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Replies:
Posted By: meterman
Date Posted: March 26 2008 at 1:25pm
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I think it's the opposite. If you wire a 400Watt ballast to a 250Watt bulb you will likely blow it.
If you wire a 250Watt ballast to a 400 Watt bulb it should fire (I've never done this) but it will only provide 250watts to the bulb. ------------- Alex |