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Discussion Starter #1
has anyone made their lid from acrylic plastic? Its seem way safer than glass and easier to cut… any input?
 

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has anyone made their lid from acrylic plastic? Its seem way safer than glass and easier to cut… any input?
only downfall from acrylic it will tend to warp after a few months, for $10bucks or less you can go to ace hardware or lowes and get a piece of glass cut and be done with it.
 

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if you buy it from the store, they will cut it for you. as far as the holes go they won't drill circular holes in it--ace hardware and lowes won't anyways, but there are tons of videos on youtube on how to drill the glass. a glass shop will drill the circular holes for you, but they will charge you per hole. for what you can buy a few glass drilling bits for would be cheaper than having the glass shop do it for you and then you will have your own bits for the next time around.
 

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+ 1 on warping. I have tried Acrylic tops on a few aquariums without any success. They always warp, the bigger the sheet, the more deformation. Lowes also sells Sheets of Lexan now, which is a bit different from acrylic and would probably stand up better. However, it is expensive, and as the other posters here have said, glass is probably your best bet.
 

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That's true. Lexan will NOT warp and is easy to drill but be prepared for the price. It's not cheap.
 

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Lexan (polycarbonate) warps. It just resists warping better than plexiglass (acrylic) does. The thicker the sheet is, the better it will resist warp. I had a 3/16" thick door made of Lexan and it warped. I've heard of people using 1/4" with no warping problems so you could try that out.
 

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Discussion Starter #14
does glass reflect heat more than acylic? i know that light penetrates glass better than acrylic..
 

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does glass reflect heat more than acylic? i know that light penetrates glass better than acrylic..
Actually, visible light penetrates acrylic better than glass. A piece of double strength (about 1/8") glass will transmit only 82% of the visible spectrum. A like piece of clear acrylic will transmit around 90%. I am comparing standard sheet glass to standard clear acrylic here. I'm not taking specialties like expensive starfire glass into account here.
 

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Actually, visible light penetrates acrylic better than glass. A piece of double strength (about 1/8") glass will transmit only 82% of the visible spectrum. A like piece of clear acrylic will transmit around 90%. I am comparing standard sheet glass to standard clear acrylic here. I'm not taking specialties like expensive starfire glass into account here.

so what % does the lexan allow light through?
 

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so what % does the lexan allow light through?
I'm afraid I have never had reason to look that one up.
so most of you folks use 1/8 inch glass im assuming?
While there are a lot of 1/8" lids out there, that is not where my stats come from. I own an insulated glass unit replacement service (window company). My stats come from my window glass manufacturer in a stats sheet that is comparing various spectrum penetration to various LowE coatings versus clear glass.
 

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Lexan has also been known to leach in water. I'm willing to bet our tanks are humid enough to cause problems.

I have tanks made from 2/3 inch thick plexi glass and they dont warp but the original lids sure did, even at that thickness!
 

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I'm afraid I have never had reason to look that one up.

While there are a lot of 1/8" lids out there, that is not where my stats come from. I own an insulated glass unit replacement service (window company). My stats come from my window glass manufacturer in a stats sheet that is comparing various spectrum penetration to various LowE coatings versus clear glass.
so knowing what you do for a living Doug, does this give you access to make some sweet monster sized tanks?
 
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