Any creative task needs a plan to proceed and you will also have to determine the shape and size of your fish tank first. Assuming that you prefer to build a conventional rectangular aquarium, an average sized tank measures about three feet wide and 18 inches deep.
Using glass to make the aquarium is the best option but you can also go for Plexiglas for durability. You will need to cut the pieces of glass according to the dimensions of your fish tank, taking account for all the sides. It is better to get the glass cut by a professional, as is it a very delicate job and you might break the glass while doing it yourself.
Arrange the pieces of glass in the shape of your aquarium and tape them together to see how the fish tank would look once you have finished the job.
Epoxy resin very efficient adhesive for making fish tanks, as it is waterproof and remains intact for a long time. Take out the epoxy tubes from the package and mix them up as per the directions mentioned on it. Make sure to mix the both tubes of epoxy thoroughly or otherwise its adhesion power wont ne effective. Moreover, always mix smaller amounts of epoxy at a time, as it hardens up in open air very quickly. Mix more epoxy when you finish.
You can use a thin utility knife for spreading the epoxy along the edges of the fish tank thoroughly. You will need faster hands to work, since the epoxy solution dries up very quickly and make sure you don’t leave any spots or gaps between the glass walls.
You will have to wait overnight for the epoxy to completely dry up before you can pour water into the tank.
When you fill your aquarium with water, wait for another night to observe if there are any leakages in the tank. You will have to add more epoxy if you find any leakage.