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Old 03-08-2006, 03:27 AM   #11
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Quote:
Originally Posted by melosu58
IMO,No. Just see too many people with them and PH problems.
Please elaborate.
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Old 03-08-2006, 08:33 AM   #12
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I think if you have a sump that is open then use a glass top on the main tank. This way you reduce evaporation. If you have both your evaporation rate per day is goign to be extreame.

People say glass tops reduce lighting into the tank. I agree but I don't knwo if anybody sientificlly knows to what degree lighting is affected.

So if you are only doing corals that are low to med-high intensity then use the glass top- if you have a open sump. If oyu are doign somehitng that is high intensity and needs all the light it can get or you don;'t have a sump then keep the top open.

Just my 2 cents you can take it or leave it I am nto the expert.
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Old 03-10-2006, 01:45 AM   #13
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How about if you have low to med intensity requirements (shrooms, polyps, etc) and you don't have a sump?

When you said "if you have both your evaporation rate per day is going to be extreme", did you mean if both sump and tank doesn't have glass top that the evaporation will be extreme? I am only looking at what you said in the context that glass tops prevent evaporations. So for evaporation to become extreme, you probably meant "if there's no glass top period", perhaps?

Melosu, what do you mean by too many people with glass tops ended up with pH problems. In what way?

Sorry, I am still learning the pros and cons and, so far, I don't see the cons in my water parameters. As a matter of fact, my SG, kH, and temp has been very stable with the glass top.
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Old 03-10-2006, 08:44 AM   #14
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I suggest going topless for all of the reasons listed above. Evaporation is a bit more of an issue, but no big deal. I top off 2-3gals every other day on my 72gal reef. Evaporation is not really a bad thing. Bottom line...its a personal decision. "If it an't broke, don't fix it."
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Old 03-10-2006, 06:39 PM   #15
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The reason I was saying to go topless is for two reasons. 1) Poor gas exchange causes lower PH. Many times people will come on this site and have low PH and when you finally get down to it , they have glass tops which as I said allows for poor gas exchange,thus lowering your PH. 2) Heating problems. Not only will glass tops keep in the water from evaporation but will also keep in the heat. There is more water surface in your main then in your sump. These are brief reasons why I suggest no tops.
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Old 03-10-2006, 08:55 PM   #16
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I do use a glass top mind you I do have a custom open sump. I havent seen any temp problems or PH issues so far. 6 months and counting...I do keep an eye on it and if any signs of trouble off they come...
The only reason I did it was to slow down my evaporation issues...
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Old 03-11-2006, 08:19 AM   #17
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Well then I say as Lando said. If it ain`t broke dont fix it. Have a good day
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Old 03-13-2006, 12:09 AM   #18
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OK, well, does the "If it ain't broke don't fix it" apply on a glass top guy like me to?

I've had the glass top for give or take 8 months now. My pH is stable at 8.1, SG stable at 1.026, Calcium stable at 420, kH stable at 352, Nitrates at 0ppms, Phosphates at 0.
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File Type: jpg bubble_coral_1_436.jpg (67.5 KB, 11 views)
File Type: jpg 031206_003_113.jpg (118.1 KB, 16 views)
File Type: jpg 031206_005_159.jpg (107.1 KB, 20 views)
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Old 03-13-2006, 12:13 AM   #19
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And here's some more.

Glass top:


The one I have is the left one (not round edges), I don't use the plastic extender so there is about 2 inches or so of opening. I have more than 1000 gph of circulation in total.
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File Type: jpg 031206_001_438.jpg (91.4 KB, 14 views)
File Type: jpg 031206_002_895.jpg (104.5 KB, 13 views)
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Old 03-13-2006, 12:26 AM   #20
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Oh, and in terms of heating problems, I used the heater provided in the 55G Topfin kit. I also have a 29G Topfin kit with a smaller heater.

So I removed the heater supplied in the 55G topfin kit. I replaced it with the heater from my 29G Topfin kit. Much smaller. My temp is always between 78F to 80F. I have thermometers on each side of my 4-ft tank.

I am happy to say that I have a successful reef starter setup with PC lighting, cheap HOB filters, and an All-Glass glass top. I learned something in this hobby and that is to K.I.S.S. so that you don't have to deal with so much fluctuations.

I actually used to have much more problems with my water with the top open, for some reason. But when I placed the glass on, increased my powerheads, bought more testers and monitored my water over the course of a few months, I actually learned that my water has been very stable. The heat is much more stable as well. I actually have a feeling based on experience that the glass top does not cause a green house effect.

Good luck to you all. Don't worry about my setup. I must just be a lucky one who has a less-than-$700 setup (total equipment and tank) with a glass top.

Lights = $260
Topfin Tank kit = $225
Prizm Skimmer = $60
Extra Whisper HOB = $30
Three powerheads = $70
Powercenter Timer = $20
All Glass Top = $30

I'm just lucky I guess. Don't try the glass top at home!
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