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DIY Aquarium Rack Build

It can be challenging to find reasonably priced aquarium stands. If you want to stack more than one aquarium on a rack, there are even fewer options. This is why most people with a fish room full of many tanks end up building their own DIY aquarium rack. There are a lot of different designs out there. The simplest one I've seen is just stacking cinder blocks on the floor and laying 2x6 boards across them. Personally I like building a cheap rack out of wood.

My First DIY Aquarium Rack

About a year ago I built a DIY wooden rack that holds two 10 gallon tanks. I used 2x4s for the entire structure, and cut some plywood to make shelves for the tanks and the bottom storage area. That whole project cost me about $40. Compare that to the cost of a stand from any store. A stand for a single 10 or 20 gallon aquarium typically runs upwards of $100. This was my first build and although it looked pretty nice (in my opinion) there were a couple things I wanted to change.

My first DIY 10 gallon rack with guppy tank and shrimp tank
My first DIY 10 gallon rack with guppy tank and shrimp tank


The first issue is that in trying to keep the rack from being too tall I squeezed the middle shelf down. As a result I only left about 4 inches of clearance above the bottom tank, not quite enough to get in and do maintenance easily. I also wanted to design it to accommodate more tanks. Having a rack that only holds two 10 gallons isn't the best use of space.

Now that I'm building out my fish room I had an opportunity to replace my original rack with a modified design. This new rack was designed to hold four 10 gallon tanks, and use only a little bit more floor space than my first design. However while I was building I decided I would rather have a 20 gallon on the top shelf than two 10's. But I still have twice the water volume in roughly the same floor area as my first rack.

Building the New DIY Aquarium Rack

In order to support twice the weight of my first stand I used a sturdier design by incorporating upright 2x4s between the load-bearing shelves. You can modify this design to suit any size tank you want; I've seen the same design used for a rack of 40 breeders (which I will probably do at some point). The most important thing is building to the dimensions of the aquarium size you want to support. I recommend having the aquarium in your possession before starting so you can test fit while you build.

The design uses the following cuts of 2x4 studs, all of which can be varying lengths depending on your application:

  • 4 upright supports that determine the overall height of the stand
  • 6 long shelf pieces that the aquariums will rest on (the front and back)
  • 6 short shelf pieces (the sides)
  • 8 vertical support pieces that support the weight of the shelves
  • Optional: 2-6 additional short shelf pieces as cross supports
  • Optional: Plywood sheet for shelving
2x4 Cuts
2x4 Cuts

The lengths of all these pieces will vary depending on your design, but I cut my uprights to 47", the long shelf pieces to 27.5", the shorter shelf pieces to 18", the upper supports to 21.5", and the lower supports to 15". A miter saw is ideal for making the cuts, but I used a circular saw when building my first rack because that's all I had. I use 2.5" #8 wood screws for fastening. A box of these screws is about $10 at a home improvement store and that includes a drill bit. 

I painted all of the wood white before I started assembling the rack. I highly recommend doing it this way if you intend to paint your DIY aquarium rack. For this build I used an old can of white paint that was sitting in my garage for about 5 years, so my cost for painting was $0.

DIY Aquarium Rack - Painted 2x4's
Painted 2x4's

After painting I assembled the three rectangular "shelves". I pre-drilled all my screw holes with a 1/8" bit. It's important to use a flat surface to build on and a level and a square to check your alignment. Once I had those three shelf frames built I slid them onto the long uprights.

DIY Aquarium Rack - Assembling the Stand
Assembling the stand

Before screwing anything into place I checked that each shelf was level. I added the support pieces between the shelves, building up from the floor so that each one sat tightly on the piece below it. It helps to drive in one screw to hold each piece in place, then go back and add another screw at each connection point.

DIY Aquarium Rack - Shelf frame assembled
Shelf frame assembled

You can cut sheets of plywood to create flat shelves (I prefer to do this), but this isn't necessary for standard rimmed glass tanks. The glass bottom of a tank with a plastic rim never contacts the surface the tank is sitting on. In fact, you really only need to support the 4 corners of the frame. If you have an acrylic tank with a flat bottom, then the entire bottom of the aquarium must be supported.

I bought a 4' x 8' sheet of plywood for $20 and cut it to size to make shelves and enclose the bottom section. I sanded and painted the plywood just like I did with all the 2x4 pieces.

My last step was to put some doors on the bottom section of the rack. I used some cheap hinges and knobs to hang the doors, which were cut from the same plywood as the shelves. I'm not a carpenter, so its not furniture quality work, but the entire build cost me under $70.

completed DIY aquarium rack
completed DIY aquarium rack
setting up tanks on new rack
setting up tanks on new rack

Once all the tanks are set up and running I'll post an update on this rack. You can see my latest fish room updates here.

14 thoughts on “DIY Aquarium Rack Build

  1. Pingback: DIY Aquarium Rack for 29 Gallon Tanks - Odin Aquatics

  2. John

    Ur bottom tanks are so lame with only side views. What's the point of owning tanks when u limit ur viewing ability?

    1. Crowlin

      The point is to fit more aquariums into a room. I breed fish and shrimp and grow plants in almost all my aquariums. Thanks for sharing for your opinion!

      1. LD

        This is perfect. I was looking for a smaller rack to fit a trio of tanks onto for the nano corner in my fish room and didn’t want to stack too high. After seeing this, I think I’ll go larger tank on top and side row 10s on the bottom for my grow outs. Thanks for this! 👍🙂

    2. Jeremiah

      Wow, you’re a real douche. There’s plenty of reasons you could have tanks sideways like that. A quarantine tank, a breeder tank, a shrimp tank, a sump. All would work fine since they aren’t for appearance. Even so, you can still see them from the sides, just making it a little bit wider would give a full view on both sides.

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    1. Crowlin

      Yes the 20 gallon is a 20 high but the stand is actually designed for two standard 10 gallons side by side on the top and bottom, I just never put the 10s on top

  4. Pingback: 28 DIY Aquarium Stands with Plans | Guide Patterns

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  6. Bill

    Any chance you have additional pictures or clarification on how to build this stand step by step? I have all the cut pieces but I am sort of confused on how to put it all together.


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