DIY 70G Acrylic Tank - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 08-03-2005, 06:10 PM Thread Starter
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DIY 70G Acrylic Tank

After Steve’s success with his DIY tank, I have finally decided to take the plunge and build the tank I have been wanting for a while. The space where the tank will be located requires a special shape so I will have to go with acrylic. Here is a drawing of the tank that I did in Visio:
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post #2 of 11 (permalink) Old 08-03-2005, 06:12 PM Thread Starter
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I know this looks weird, but the location where the tank will go (an in-wall cabinet with a bookcase above it) has the following measurements. 48”X13” front and 44”X11” rear. Height is not a big issue, but I would like it to be around 20” tall. So if I did my math right, (Length x Width x Height divided by 231) a tank with this footprint and 20” tall would equal around 70 gallons.

I want to have as much of the top open as possible so I am looking to have a 2” border without a front to rear brace. The top will be a single piece of acrylic with the opening cutout and ¾” holes drilled into it for suction and discharge hoses from two canister filters. The heater, CO2 diffuser, and other gadgets will be inline from the filters. Here are some pictures of the top cutout:
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post #3 of 11 (permalink) Old 08-03-2005, 06:13 PM Thread Starter
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Now I know that I will need cast acrylic and because of the possibility of bowing, it has been recommended that I use ½” acrylic. I plan on buying the acrylic already cut and drilled to specs. I also plan on building a wooden frame to hold the tank while it cures. Besides these two things, are there any gotcha’s I should worry about? Are there different clarity’s for ½” cast acrylic? Is ½” going to be enough or will I have to go up to 5/8” or ¾”.


Any help or suggestions would be greatly appreciated. BTW Steve (scolley) thanks for you thread about building a custom tank. The boss (my wife) is ready to kill me (for even thinking about doing this) and you (for actually doing it and then posting it to the board). Lol

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post #4 of 11 (permalink) Old 08-03-2005, 06:48 PM
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DIY acrylic / glass site

I don't know if you have seen this link but it may be helpful:

http://www.garf.org/tank/buildtank.asp

Good luck.


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post #5 of 11 (permalink) Old 08-03-2005, 10:12 PM Thread Starter
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Quote:
Originally Posted by Badcopnofishtank
I don't know if you have seen this link but it may be helpful:

http://www.garf.org/tank/buildtank.asp

Good luck.
I have seen that site and it recommends using 3/8" acrylic but when I checked around about having this built and they all said it would take 1/2" and a center brace.

Plus the lowest quote I got was $1000.00

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post #6 of 11 (permalink) Old 08-19-2005, 04:05 AM
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I've built quite a few acrylic tanks, and have built several 190s out of 3/8" cell-cast. The main problem w/ your tank plan is keeping the middle w/out a brace, this would require much thicker sheet to keep the bowing under control, and even then it still may bow more than you desire (since acrylic will gradually sag more over time if left without a brace). I think you can build the tank without much trouble using 3/8" sheet for the tank and 1/2" sheet for the top but you WILL need a center cross support. Otherwise the tank will require 3/4" material (and alot of $$$). Here's a link to my tankbuilding article and if you need more info let me know via a PM.
http://www.cichlid-forum.com/article...c_aquarium.php
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post #7 of 11 (permalink) Old 08-19-2005, 04:38 AM
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That looks like another fun project to follow along with. Can I make a suggestion to not use the black acrylic? I think you'll find over time that you'd like to swap out the backround for different colors over time and may regret using a solid acrylic for that application.
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post #8 of 11 (permalink) Old 11-12-2005, 03:07 AM
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Hey Thooshe! I just stumbled on to this thread now - a bit late, sorry .

It looks to me like you are embarking on our own aggressive adventure. Nothing like my own, but blazing your own trails here. Way to go!

Only problem is, now that I've finally stumbled onto this... where's the progress report? Have you given up? Maybe having a life got in the way?

Let us know what's up. You are trying to do something very cool here, and an update would be nice.

Good luck!

Steve - 33g reef and a 180g planted in need of a re-scape.
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post #9 of 11 (permalink) Old 11-14-2005, 01:53 PM Thread Starter
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After looking at the cost of getting the tank built, having to drill holes in the cabinets and discussing it with the wife. She told me to go ahead and get a larger tank with a stand. I am now in the planning process of a 125G tank. Will start buying stuff after I clear out(sell off) all of my old stuff.

With the new tank I plan on getting the items I want by doing everything slowly. In the past, I got into a hurry trying to set everything up so I had to compromise on certain things. I figure that if I plan and take my time with this one, it will be the tank of my dreams.

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post #10 of 11 (permalink) Old 11-14-2005, 02:15 PM
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Well, so much for the aggressive building process. But hey, if you can afford to just buy what you really want, that's a lot better than taking on the risks involved in building a compromise, IMO.

Good luck with the 125.

Steve - 33g reef and a 180g planted in need of a re-scape.
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post #11 of 11 (permalink) Old 11-14-2005, 08:12 PM Thread Starter
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That is one of the main reasons I am taking my time. This hobby can get expensive quick.

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