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Old 05-01-2007, 07:16 PM   #1
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Glass Hood

Okay, I finally got my lighting about a month ago and was told that I needed to get a glass hood so I did. The light that I bought is a 30 inch dual current satellite (which I'm extremely pleased with) with the mounting legs so my light sets about 3 inches off of my tank. My question is: Is it really necessary to have the glass between the tank and the light? It would seem to me the glass would interfere with the full spectrum of the light. TIA!
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Old 05-01-2007, 07:35 PM   #2
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No. Usually hoods cause PH issues b/c they interfere w/ the gas exchange. CO2 tends to accumualte in tanks and the hood prevents it from escaping causing PH to drop, etc. It will filter some of the light as well as you mentioned. HTH
BTW is your lighting MH?
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Old 05-01-2007, 09:52 PM   #3
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no, it is a power compact.
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Old 05-01-2007, 10:28 PM   #4
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Just making sure, some MH need glass to filter UV rays- No worries than.
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Old 05-02-2007, 10:35 AM   #5
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I agree, the glass can also trap heat. I would get rid of it.
Mike, would the cover on the lighting unit be enough to filter out the UV rays?
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Old 05-02-2007, 01:51 PM   #6
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IMO glass hoods are not that great for your tank. They as Mike mentioned, cause low PH from poor gas exchange at the surface. They also trap heat in your tank from the lighting. Kind of like sunlight going through your car window and turning into heat. These are two reasons that I dont recommend glass hoods. If you are afraid of jumpers then try egg crate on top.
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Old 05-06-2007, 01:39 PM   #7
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what about a regular hood system? or do they fudge the PH as well?
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Old 05-06-2007, 01:47 PM   #8
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Mine gave me problems with pH, so I removed it and the problems was solved.
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Old 05-06-2007, 03:40 PM   #9
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Great info! You guys just saved me $35. I thought about getting a glass hood (for jumpers). I didn't know that affected pH. I'll try the egg crate. Thank you for sharing your experience!
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Old 05-06-2007, 04:17 PM   #10
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Anytime, I bought my eggcrate at Lowes, they probably have it at Home Depot too.
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