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Old 03-03-2006, 07:17 PM   #1
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glass top for 55g ok ?

ok i have had my 55g reef tank for about 4 years and it has a 4 section glass hood . i have my 265watt jbj pc about 4 inches over it on legs.


is it better to have the glass top on or off?
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Old 03-03-2006, 07:37 PM   #2
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Take the top off. This will improve gas exchange from the tank and will also keep temps down as well.
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Old 03-04-2006, 01:15 AM   #3
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Just make sure that while the glass is off you watch your light fixture.. Salt creep can do some damage if you don't keep up with it..
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Old 03-04-2006, 08:45 AM   #4
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I agree keep them off for reasons stated above
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Old 03-06-2006, 10:04 PM   #5
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the bj lighting has a protective plastic cover that keeps teh elements away from the lights itself which it seems is loosiing its intensity time to change em
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Old 03-06-2006, 11:17 PM   #6
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I used to have an open top 55G reef.

Then, people in the forum suggested to get glass tops on so that (a) no bad stuff lands in the tank's surface, (b) help keep the temps from jumping too high, (c) helps prevent too fast evaporation which causes fluctuations in SG prior and after a top off, and (d) it prevents salt creap from going places (like fan inlet of my CUSA Orbi 4x65w fixture).

So far, my temps stay between 78F at night and 80F when the daylights plus actinics are on. It's been a couple of months since I purchased the "flippable" glass tops. The corals are doing really well. Top offs have been much less than before. And salt creap has been reduced greatly.

I have powerheads all over the place in the tank. 400GPH Aquaclear with quickfilter attachment pointing towards the surface which aids in surface agitation, 175 GPH Aquaclear with oscilating wave maker, and 270 GPH Aquaclear pointing towards LR rock-work to prevent settling of detrius and keep dead spots from happening.

I think I have a good amount of water movement which increases the possibility of gas exchange.

Wouldn't glass tops be OK as long as you have ample water circulation and movement?
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Old 03-07-2006, 06:04 PM   #7
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IMO,No. Just see too many people with them and PH problems.
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Old 03-07-2006, 06:39 PM   #8
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What if someone had an open sump and then a glass top on the main? Sorry if this is a hijack, but right now i've got eggcrate on my tank and i think i should be fine. Im not going to be stocking any real big carpet surfers. Not sure if the sixline wrasses are big jumpers...
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Old 03-07-2006, 09:07 PM   #9
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Quote:
Originally Posted by mrcrazypants05
What if someone had an open sump and then a glass top on the main? Sorry if this is a hijack, but right now i've got eggcrate on my tank and i think i should be fine. Im not going to be stocking any real big carpet surfers. Not sure if the sixline wrasses are big jumpers...
This is a very interesting point. My first reaction would be to say that it would be fine since the sump is open. I think I would be a little bothered that my lights would not be penetrating as much.
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Old 03-07-2006, 10:53 PM   #10
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well my eggcrate diffuses it some anyway... I likely will keep the eggcrate on it.
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