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| View Poll Results: Do you use a Glass Top? | |||
| Yes |
   
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47 | 19.83% |
| No |
  
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191 | 80.59% |
| Multiple Choice Poll. Voters: 237. You may not vote on this poll | |||
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#1
03-06-2011, 05:33 PM
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UV Light Good/Bad
Hello I'm a new member, (sounds like AA) i have a question to pose to the reefer community: Is Ultra Violet light beneficial to my tank? Here is my rational behind the question:
1) Silica Glass (most glass) does not transmit UV light (or very little), hence you cannot get a suntan indoors. 2) the amount of UV light at the equator, most coral reefs, is about 1000X higher than at the north pole (the south pole has a man made ozone layer hole) 3) My Maxspect G2 LED's produce a focused yet wide array of light wavelengths that include the UV -A,B,C as well as visible. 4) If i take my glass lid off the tank it will evaporate more and i risk losing fish to Tank Jump Suicide. So fellow reefers what should i do? take the cover off and give full reign to my overpriced LED's or continue down this path of salt creep and a UVless tank? PS Dont buy G2's they have no controller or dimmer, I thought in this day and age that would be standard, apparently not in China.  
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#4
03-07-2011, 02:19 AM
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i voted both yes and no.... if i am using a canopy then no... no canopy then yes usually with the exvception of in the summer as it restricts evap and the temp gets too high...
__________________
72 Gallon Bowfront Reef.. Hardware:2x250w Luminex Elite HQI Reflectors (Phoenix Hexarc Bulbs), Galaxy 2x250w Electronic ballast, Euroreef 130 Skimmer, Sedra KSP 7000 Retern... Live Stock: Pair of Hawaiian Flame Wrasse, Leopard Wrasse, Pink Streaked Wrasse, Pair True Percula Clowns, Potters Angel, African Flameback Angel, Orange Fin Tomini Tang, Yellow Assessor, Tailspot Blenny, Purple Firefish.. 45 G FW Asain Barb Community tank.
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#6
03-07-2011, 05:56 AM
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No glass top on the tank but glass shields on my MH fixtures.
__________________
Feed the bear goodies, make a new friend, don't feed the bear............... 8' - 165gal Reef DIY LED's Build 2012 Nano Contest Winner Febuary 2013 POTM Winner 300 gal + 60 gal Complete DIY Build
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#7
03-07-2011, 05:38 PM
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#8
03-08-2011, 06:28 PM
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I don't know if this will help, I have a glass shield on my 400w mh with a glass top. last month I decided to take my glass top off so I don't have to clean my glass top all the time.(I am not lazy just try to make things easier
 ) I had the glass off for about three days and all of sudden 5 of my acros started to bleach. Now I am not sure if its due to the sudden change in light intensity and excess uv shinning down but I immediately replaced my glass top, 2 weeks later 3 of the 5 recovered and the other 2 is now in the garbage. I don't believe that coral needs uv to grow but it can definitly with stand it and flourish either way. What I am trying to say is take it slow, raise your light and let your coral get use to it and not just remove it like I did. best of luck let me know how it turns out. 
__________________
Though a tree grow ever so high, the falling leaves return to the root. 300DD - 140DD  TOTM Fall 2013
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#9
03-09-2011, 08:40 AM
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A sudden increase in UV rays can cause your corals to bleach. That's why they need to be acclimated to your tank by starting them off in lower areas and slowly moving them up.
Depends on the conditions they came from. I'm using Lexan lids on my tank, but that's mainly to decrease the amount of evaporation.
__________________
Mitch
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| Tags |
| led, maxspect, reef, ultra violet |
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