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Reef And Saltwater Lighting, Filtration, Reactors, Refugiums, Skimmers, Pumps, And All Other Devices This is the place to discuss filters for reefs and other saltwater tanks. Posts belong here that are involving saltwater aquarium hardware - skimmers, reactors, denitrators, refugiums, wet/dry, uv, ozone, co2, pumps, lights, chillers, etc.

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Old 11-08-2008, 07:12 PM   #1 (permalink)
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I Just Picked Up A Used K2 Viper 70 Watt Hqi With A 8k Bulb And A 14 K Bulb. I Was Useing T5 Ho's On A 12 Gal Nano.......the T5 Ho's Are A Hell Of A Lot Brighter Then The Hqi 14k And The 8k Bulbs.........what Do You Think. Should I Replace The Hqi Bulbs On The K2 Viper.
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Old 11-08-2008, 07:14 PM   #2 (permalink)
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I Just Picked Up A Used K2 Viper 70 Watt Hqi With A 8k Bulb And A 14 K Bulb. I Was Useing T5 Ho's On A 12 Gal Nano.......the T5 Ho's Are A Hell Of A Lot Brighter Then The Hqi 14k And The 8k Bulbs.........what Do You Think. Should I Replace The Hqi Bulbs On The K2 Viper.
If you have heat issues, go with the T5's. I personaly like MH's Luna
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Old 11-08-2008, 07:16 PM   #3 (permalink)
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IMO I am not sure how the HQI bulbs work considering I never used them but if T5's have been good to you I would stick with what you feel safe with.
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Old 11-08-2008, 07:17 PM   #4 (permalink)
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Heat Is Not The Problem At All...........the Hqi Bulbs Are Not As Bright. I Thought They Would Be Better And Brighter.
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Old 11-08-2008, 07:18 PM   #5 (permalink)
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IMO I am not sure how the HQI bulbs work considering I never used them but if T5's have been good to you I would stick with what you feel safe with.
MH's are the best but if you don't set them right they tend to get a little to warm for the tank. T5's would be my choice if you never had experience with the MH's before.
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Old 11-08-2008, 07:26 PM   #6 (permalink)
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Like I'm Saying Heat Is Not A Problem I'm Running At 78.9........the Lighting Is The Problem. The Mh Bulbs Are Not As Bright. Any Reason Why????????
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Old 11-08-2008, 07:27 PM   #7 (permalink)
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Like I'm Saying Heat Is Not A Problem I'm Running At 78.9........the Lighting Is The Problem. The Mh Bulbs Are Not As Bright. Any Reason Why????????
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Old 11-08-2008, 07:32 PM   #8 (permalink)
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Like I'm Saying Heat Is Not A Problem I'm Running At 78.9........the Lighting Is The Problem. The Mh Bulbs Are Not As Bright. Any Reason Why????????
How old are the MH bulbs? How old are the ballasts? Is this unit new or used? Luna
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Old 11-08-2008, 07:35 PM   #9 (permalink)
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Used For 4 Months....they Shouldnt Be Bad
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Old 11-08-2008, 07:42 PM   #10 (permalink)
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How old are the MH bulbs? How old are the ballasts? Is this unit new or used? Luna
I was just about to ask that. I think from what I was told that you should change MH bulbs every 6-12 months depending on how much the were used (meaning how long they were on for each day).
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Old 11-08-2008, 07:43 PM   #11 (permalink)
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Just wondering.. whats the wattage of the T5s?
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Old 11-08-2008, 07:44 PM   #12 (permalink)
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Used For 4 Months....they Shouldnt Be Bad
MH bulbs will last anywhere from 8-12 months, depending on how long you run them. The problem with used units is, you really dont know how old they are. For all you know, they could be a yr old. If it was possible, try getting new bulbs to see if the new ones burn brighter. Luna
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Old 11-08-2008, 08:06 PM   #13 (permalink)
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The T5 Ho's Are Only 8 Watts Each And There Are 4....i Will Get A New Mh Bulb And See If That Is The Problem...i Also Contacted Jbj To See What The Warranty Is On The Light And The Balest.
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Old 11-08-2008, 08:20 PM   #14 (permalink)
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Your eyes cannot detect what a lux meter can, btw. Just want to throw that out there. There are devices to measure what you are guessing at.
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Old 11-08-2008, 08:26 PM   #15 (permalink)
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Your eyes cannot detect what a lux meter can, btw. Just want to throw that out there. There are devices to measure what you are guessing at.
SO HOW COME THE T5 HO'S LOOK SOOOOOO MUCH BRIGHTER AND THE CORALS LOOK SOOOOOOOO MUCH BETTER UNDER THEM THEN THE MH
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Old 11-08-2008, 08:54 PM   #16 (permalink)
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T5s don't cast shadows like your MH will. That's also enhancing their effect that you notice.
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Old 11-08-2008, 08:56 PM   #17 (permalink)
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I decide to change from T-5 to MH to see what I liked better and when I did my tank didnt seem as bright with the MH's as it was with the T-5's but at the same time I was over driving my T-5's on an IC 660. The T-5's spread even amounts of light the entire length of the tube and that is usually the length of the tank and MH's are more of a point sorce light.
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Old 11-09-2008, 08:38 AM   #18 (permalink)
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But when you see some of the corals i have purchased under MH lighting they are so much more colorful then under my MH.
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Old 11-09-2008, 09:09 AM   #19 (permalink)
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But when you see some of the corals i have purchased under MH lighting they are so much more colorful then under my MH.
They probably had some actinics bulbs with the MH bulbs. The blue spectrum from the actinics is what bring out the colors in the corals. Do you have actinic bulbs? Luna
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Old 11-09-2008, 09:36 AM   #20 (permalink)
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But when you see some of the corals i have purchased under MH lighting they are so much more colorful then under my MH.

When you say more colorfull does it take awhile for you to loose some color or does it happen as soon as they go into your tank??
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