Building an Hexagonal Acrylic Aquarium

Here's a fishtank I built to fit inside an old oak coffee table I found at a flea market. It's not a simple build, but I managed to figure it out mostly by myself with little prior experience. Here's how I did it.

Step 1 Materials and Tools

I started with the oak end table and some acrylic sheet from Home Depot.  The acrylic tube came from a plastics wholesale business. Have as much of the acrylic pre-cut as possible. When I need to cut acrylic, I use a jigsaw with a plastics blade.  You'll also need a propane torch and an acrylic solvent called methylene chloride.

Cutting a straight line along edges that will be watertight is really important. Cut and file edges smooth and you'll be rewarded with a tank that won't leak. I find it useful to build cardboard models of my tanks and then use them as templates for my acrylic.

Comments

[codyg102]

You could also use a "heat gun" to soften the acrylic (I'd recommend using one of the push-on ends that narrows the air stream to focus the heat where you need it better). Less chance of damaging the material than you have with a propane torch.

[Rob311]

How thick is the acrylic?

[twighahn]

i think i saw that cat at a macquarium

[lazychino]

i think it can be done with an LED light on top

[robbtoberfest]

 Can you tell me more about the "glue" or solvent stuff that holds it together? Where do you buy it, what's it called, etc.?

[robbtoberfest]

 Nevermind, sorry; I just saw the link on the right on how to glue acrylic.

[robbtoberfest]

 Can you tell me more about the "glue" or solvent stuff that holds it together? Where do you buy it, what's it called, etc.?

[komecake]

  This is pretty cool. I have a 5 gallon hexagonal tank that I paid $40 for that has GREAT reviews and it works great. I love it. Even though I enjoy making things, it seems like a lot less time and cheaper to pay the $40, but that's just my opinion.

 I really do like it though. I don't have all the tools to make something like this, but I have this large end table sitting next to me that is hexagonal and probably 20 gallons if it were a tank. How cool would that be?!?!

[Noalie]

 I belive fish (and perhaps other aquatic animals as well, not sure) need to get the light from straight above in order to get a good sense of orientation and well being. Like stinna2 already commented, the lack of filtration will make this aquarium unhealthy in a short time. The plants will provide oxygen, but the water still needs to be stirred or else there will be a layer of proteins and other dirt on th surface.
Apart from that, the tank looks really good! Maybe you could keep snails or shrimps in it, that way you wouldn't need to worry about the size of it being to small for the fish. but some guppys would prbably do just fine in there too.
Good luck!

[heySkippy]

The tank has an undergravel filter. I cut a couple up and glued them back together to make a filter plate that covers almost all the bottom. If you look closely in the picture above, you'll see the air tube on the opposite side of the light tube. The air hose goes down the light tube.

I really don't think the fish care where the light is coming from.

[Noalie]

Oh, sorry about that. Sounds great.
I really don't wanna come off as a "miss-know-it-all", but i'm pretty sure that my statement about the lighting is atleast somewhat accurate. in nature, the sun is always above the water, shining down. Most fish are coloured so that their underside is lighter (to blend with the light from above) than their oversides (to blend with the darknes from below). Plants should probably benefit most from aboveside lighting as well, or else they may become crooked. But your plants look relly godd and healthy, so maybe i'm wrong about that one.
Anyhow, I really don't hink that it's VITAL for the fishies survival or anything. :)
I have lights on the side of one of my tanks as well.
I think we have the same fish...platys?
Cheers

[heySkippy]

No problems. I don't claim to be an expert on fish (or anything else really). I need to add a bunch more details to this instructable and will in the next day or two.

[stinna2]

i just noticed your build.  Very nice!!  i am just wondering about filtration...

[eyebot117]

DON'T OPEN THE DOOR!!!!!!! AHHHHHHH!!!!!!!!!! JK, It's enclosed. You can open the door. =D

[RadBear]

Cool!!! You might want to put some comments in the photos in step 4 to make the process a little clearer. Otherwise great Instructable.