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View Poll Results: Do you use a Glass Top?
Yes 47 19.83%
No 191 80.59%
Multiple Choice Poll. Voters: 237. You may not vote on this poll

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  #1  
Old 03-07-2011, 05:51 AM
monocus monocus is offline
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Default glass top

i built a canopy&my vertex hangs 12 " above the water
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  #2  
Old 03-07-2011, 05:56 AM
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No glass top on the tank but glass shields on my MH fixtures.
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  #3  
Old 03-07-2011, 05:38 PM
Zarstar Zarstar is offline
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Quote:
Originally Posted by The Grizz View Post
No glass top on the tank but glass shields on my MH fixtures.
Interesting thought. The G2 has acrylic glass the best i can tell. Acrylic will transmit down to 300nm so thats some UV. You would think lighting manufacturers would consider this stuff...
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  #4  
Old 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.
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Old 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.
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  #6  
Old 03-12-2011, 02:43 PM
reefan reefan is offline
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I don't recommend a glass top, the tank does better when it can "breathe"
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  #7  
Old 03-14-2011, 06:28 PM
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In the summer, evaporation cools your tank. This means lower cost for chillers etc.. I run fans in the summer that blow air over the top of my aquarium and that meets all my cooling needs at a fraction of the energy consumption from a chiller.

You can buy clear mesh screening to prevent your fish from committing suicide:

http://www.bulkreefsupply.com/store/...ing-7-x-3.html

There is a video instruction in BRS on how to make a screen top for your tank.
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Old 03-19-2011, 01:06 AM
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Question Plastic Shield

Does the plastic shield covering my bulbs on my hood reduce the UV light? Will there be any harm that my bulbs will explode or weaken due to salt evap.? I don't have glass covering my tank.
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Old 04-09-2011, 05:07 AM
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my glass top broke.only difference i have noticed is lots of evaporation so now i have to fill my top up bucket every 3 days instead of 5-6 days.gay balls! i like it better with glass top personally because of this but will run without until the day comes and i can afford my starfire cube ;-)
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