Acrylic versus Glass

You could go on for years arguing about the same issues here. I had a 360g in acrylic before and now have a 750g in glass.

Acrylic:
-very light weight and easy to move. It took 2 people to move my 3/4" 360g tank before and took me and another pretty strong guy to move my current sump: 460g in 3/4" acrylic.
-material is extremely strong
-material is extremely flexible taking shaking (earthquakes) well.
-extremely easy to drill
-joints are virtually indestructible if built correctly
-it is by far the most clear material a tank can be made out of. Nothing compares to it in clarity.
-very good to ship as it will take tons of pounding and poor care by the shiper with poor crating and still make it just fine.
-just like any plastic, it attracts coraline like there is no tomorrow. It may not grow anywhere else in your tank, but the acrylic will grow it extremely well and fast.
-if you look at it the wrong way, it scratches. No matter how carefull you are, one is bound to scratch it pretty often and in too many places if you do try to keep it clean. Magnet or not, acrylic only pads or not, acrylic only blades or not, it will scratch almost the same. I scratched my previous acrylic tank before it made it even into the house. Then some more even without getting water into it yet. That was trying to be carefull.
-extremely easy to take scratches out, but it will take work. Just because it is simple it doesn't mean it is not annoying, tiring, tedious, repetitive, and a PITA for some of us.
-Plenty of extremely good manufacturers around the country.
-tends to get built and shipped quicker than glass.
-in larger sizes, price is pretty comparable to glass depending on the manufacturer of course.
-in larger sizes will almost always require a eurobrace in addition to cross braces.
-fairly easy to put into any location in a home, including a basement.

Glass:
-Extremely heavy. It would have taken 16+ people to lift mine (1,800 Lb dry). I am sure we would have dropped it too if we had tried. A little ingenuity and planning got it from a trailer into the stand inside the house in less than 25 min. with 5 people. Never lifted it once either.
-If you move frequently (>1 per year), you might want to re-think going this material.
-when going with thicker gass than 1/2", there will be a very noticeable green tint to the glass that may change the colors you see a little.
-One can use low iron glass in 1/2" and 3/4" for a clearer view. Hoever, even the low iron glass is nowhere near as clear as acrylic.
-not that many manufacturers of glass tanks as there are acrylic.
-they tend to take much longer to build than acrylic for some reason. I think it mostly has to do with the glass manufacturers being smaller outfits and are always running way behind in construction. That is not true to all of the manufacturers, but for the most part it is true for the majority.
-requires more delicate shipping with much better crating and care required.
-surprisingly, prices for shipping larger tanks are almost the same as for acrylic.
-would be a real chore to get into a basement if not having a walk out basement.
-very very easy to clean.
-most strong magnets will take off even coraline if used repeatedly without scratching the glass.
-Extremely forgiving on maintenance. I left my 360g go without cleaning the panes for about 8 weeks and took me 16+ hours to scrape the coralline off with allt he care in the world not to scratch it. I still got it scratched. I did the same to my glass tank a few months back and it looked almost the same as the acrylic. However, it took me an hour to get the it cleaned. No scratches.
-it does scratch too if one is extremely careless, but it takes a lot. HOwever, unlike acrylic, the scratches are permanent!

Personal conclusion:

I get out of the hobby before having another acrylic tank!!!!
 
I know that glass sheets can be essentially glued together to make a thicker sheet of glass. Can this be done with acrylic and glass? I am wondering if you had an inwall tank and just wanted to transparently bond a thin sheet of Starfire glass inside the acrylic sheet that goes on the front would this work? I assume you would have to bond something like 1/4" Starfire to one side of the proper thickness acrylic and then build the acrylic tank as you normally, taking care to make sure the side panels fit flush against the edge of the glass sheet (and making sure you remembered to put the glass side inside the tank as you glued it up).

I appreciate this works best for tanks where you only see the front panel of the tank but with careful work you could probably also do it for the sides too. I guess if you were one of those neatness types that like the back to be completely clear you might have to do it all the way around. I am thinking that you might want to leave the back 100% acrylic to make it easy to put in bulkheads, overflows, closed looks, etc.

Just wondering.....
 
<a href=showthread.php?s=&postid=8044653#post8044653 target=_blank>Originally posted</a> by acroporia
I know that glass sheets can be essentially glued together to make a thicker sheet of glass. Can this be done with acrylic and glass? I am wondering if you had an inwall tank and just wanted to transparently bond a thin sheet of Starfire glass inside the acrylic sheet that goes on the front would this work? I assume you would have to bond something like 1/4" Starfire to one side of the proper thickness acrylic and then build the acrylic tank as you normally, taking care to make sure the side panels fit flush against the edge of the glass sheet (and making sure you remembered to put the glass side inside the tank as you glued it up).

I appreciate this works best for tanks where you only see the front panel of the tank but with careful work you could probably also do it for the sides too. I guess if you were one of those neatness types that like the back to be completely clear you might have to do it all the way around. I am thinking that you might want to leave the back 100% acrylic to make it easy to put in bulkheads, overflows, closed looks, etc.

Just wondering.....

acro has a good point. what if u put a thin sheet of glass on the inside to make cleaning coraline and algae easier but kept the outside acrylic for the clarity.

ALSO what would happen if u had a glass tank and created a back chamber out of acrylic. would difference in expansion from temperature make this impossible??
 
Aside from all the other feedback...I've just begun to learn that the scratches I get in my acrylic tanks are caused by fish. As careful as I am, I can't stop the fish from occassionally slashing the walls.

I never even considered glass for my 400 gallon.
 
so far I have 1 or 2 very small scratches on my acrylic 300 witch are not noticeable.I have a scratch removal kit but its to early for that.I only have had the tank about 4 months now and I have been very careful.I find when I had my glass tank I wasn't as paranoid about scratching it and I had the tank for almost 3 years and it never scratched.I did have a rock fall over on my acrylic tank and I thought the tank would have scratched but it didn't.I have read it takes some leg work to get scratches out.Mine are very superficial so I wasn't going to attempt anything.I figure if I get any bad ones then I will try to removal pads.
 
I asked this same question on the Cleveland reefers site and what I have to agree with is ...
that if you do your maintenance and cleaning very regularly you can get by with acrylic and all of its benifits but if your like me and spend the summers out of the house, sailing, scuba, cutting grass, etc, etc, etc, the easier the maintenance the better!

I'm planning on a bigger tank right now and I have let my 75 reef setup with fish go "unscraped" for sometime during the summer. Sometimes for 5 or 6 weeks at a time especially if I wasnt having any company over! My kids would complain that they cant see the fish, lol.
Then when I do clean it the coraline/algae etc scrapes right off with a thin metal scraper blade and looks like new! I dont think I could do that with acrylic!
If you have time to clean maybe acrylic is for you.
I have heard enough now that the 240 I want will probably be glass. I have seen older acrylic tanks going for pretty cheap but they all have that "used" look to them
 
I was wondering how acrylic owners get that stubborn coralline off. I have some crazy tough coralline on my glass tank and only a sharp razor will get it off. Also can you use the same method on acrylic if you're extremely careful as in go in one direction, clean the blade then go over it again?
 
I currently have an acrylic tank and hate it. the tank is scratched so bad it almost embarrassing to show it to anyone. Acrylic is a coralline magnet and if you don’t keep up with it will etch into the acrylic and leave scratches.
 
I have owned glass aquariums all my life. My latest one is a starphire tank that i built. The only dealings i have with an acrylic tank long term is my sump. That being said i am going for the acrylic on my 300 i am getting. I like the clarity compared to starphire and drill ability. I really don't want to drill another glass tank for over flows and CL again. And i want a clearer tank.
From what i have read it all comes down to personal preference. You really need to evaluate your husbandry. I am the guy who can't stand a tank with coralline on the glass or overflows and clean on a daily basis. I will remember this thread and post how i feel about acrylic next year. Happy new year everyone!
 
It always cracks me up when people use the "I don't need 10 guys to move my tank" as one of the pros to acrylic over glass. I don't know about everyone else, but after the initial one time set up, my tank pretty much sits in the same spot for years on end...
 
It always cracks me up when people use the "I don't need 10 guys to move my tank" as one of the pros to acrylic over glass. I don't know about everyone else, but after the initial one time set up, my tank pretty much sits in the same spot for years on end...
 
60x60x30 470 gallon glass tank and 96x30x30 375 gallon glass tank...I would never do acrylic due to the fact that coralline algae and scratching ruin the look too quickly and surely.

If you guys want to discuss vendors on tanks, take it to the Vendor Experience Forum please....this forum is for non-vendor talk. Thanks:)
 
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