How to Attach Plexiglass to Aquarium: A Step-by-Step Guide for Secure Installation

Do you have an aquarium and are thinking of adding plexiglass to it? Plexiglass is a great alternative to regular glass as it’s shatterproof and more lightweight. It’s also easier to cut and shape, making it more versatile for custom aquariums. However, attaching plexiglass to your aquarium isn’t as simple as just gluing it on.

You need to make sure it’s securely and properly attached to avoid any disasters. In this blog post, we’ll guide you through the steps of attaching plexiglass to your aquarium. We’ll cover everything from the materials you’ll need to the different attachment methods you can use to ensure your aquarium stays safe and secure.

So, let’s dive in!

Gather Materials

If you’re interested in attaching plexiglass to your aquarium, the first step is to gather all the necessary materials. You’ll need a sheet of plexiglass that’s the same size as your aquarium’s open top, a silicone adhesive, a clean cloth, and a measuring tape. Make sure you measure your aquarium accurately to ensure that your plexiglass fits perfectly.

Once you have your materials ready, clean the edges of your aquarium with a cloth to remove any dust or debris. Then, apply a thin, even layer of silicone adhesive to the edges of your aquarium, making sure to leave a gap for any cords or cables that run through the top of your tank. Finally, place your plexiglass sheet on top of the adhesive, gently pressing it down to ensure that it’s firmly attached.

Allow the adhesive to dry completely before filling your aquarium with water. By following these steps, you’ll be able to securely attach plexiglass to your aquarium, providing an extra layer of protection and security for your fish.


When it comes to starting any craft project, whether it be knitting, painting, or woodworking, the first step is always to gather materials. You’ll want to make a list of everything you need before you begin, so you don’t have to run out to the store halfway through. Depending on the project, you’ll need specific items like needles, yarn, paint, brushes, wood, sandpaper, and so on.

But don’t forget about the little things like scissors, measuring tape, and glue. And don’t be afraid to get creative with your materials and try using things in unconventional ways. For example, using old t-shirts for a quilting project or repurposing old furniture for a DIY project.

By gathering all your materials beforehand, you’ll be able to dive into your project without any interruptions or delays.

how to attach plexiglass to aquarium

Measure and Cut Plexiglass to Fit Your Aquarium

If you want to attach plexiglass to your aquarium, you’ll need to start by measuring and cutting the plexiglass to fit. It’s important to get accurate measurements so that the plexiglass sits snugly against the aquarium walls without any gaps, which could cause leaks. Once you’ve measured the length and width, you can use a circular saw with a fine-tooth blade to make the cuts.

Be sure to wear protective gear like goggles and gloves and follow the instructions carefully to avoid any accidents. After you’ve cut the plexiglass to size, you can attach it to the aquarium using a silicone adhesive or aquarium sealant. Apply a bead of adhesive to the edges of the plexiglass and press it firmly against the aquarium wall, being careful to avoid any air bubbles.

Let the adhesive dry completely before adding water to your aquarium, and you’ll have a seamless, clear barrier that keeps your fish and plants safe and sound. With a little patience and attention to detail, attaching plexiglass to your aquarium is a simple DIY project that can save you money and provide extra protection for your aquatic pets.

Measure and Mark Plexiglass

Plexiglass When it comes to creating a safe and sturdy aquarium, proper measurement and cutting of plexiglass are essential. To start, carefully measure the dimensions of your aquarium and mark them on the plexiglass with a permanent marker. It’s important to make sure your measurements are precise, as any errors can result in a poorly fitting piece of plexiglass that won’t adequately support the water weight.

Once you’ve marked the plexiglass, use a scoring knife or a circular saw blade to cut along the lines, being sure to apply even pressure and make long, smooth strokes to avoid rough edges. When working with plexiglass, it’s important to take your time, work carefully, and wear appropriate safety gear to prevent injury. With the right approach, cutting and fitting plexiglass can be a satisfying DIY project that results in a beautiful, functional aquarium.

Cut Plexiglass to Size

Cutting plexiglass to fit your aquarium can be a bit daunting, but with a few simple steps, it can be done easily. The first step is to measure the dimensions of your aquarium carefully. Once you have the accurate measurements, transfer them to your plexiglass sheet using a marker or a pencil.

A good way to make the cutting process easier is to use a straightedge to guide your cut. When cutting the plexiglass, make sure to use a fine-toothed saw blade and apply light pressure. You will also need to periodically lubricate the saw blade with water to prevent it from overheating.

If you encounter any rough edges after cutting, smooth them with a sanding block or a polishing agent. With these simple steps, you can easily cut the plexiglass to the right size and have a perfect fit for your aquarium. Remember to take your time and exercise caution throughout the process to achieve the best result.

Preparing for Attachment

If you’re looking to attach plexiglass to an aquarium, the first step is to gather all the necessary materials. You’ll need the plexiglass panels, silicone adhesive, a clean cloth or paper towel, and some strong tape. Once you’ve got everything you need, clean the area where you plan to attach the plexiglass using a mild soap solution and let it dry completely.

Next, apply a thick bead of silicone adhesive along the edge of the plexiglass panel, making sure to apply enough to create a strong seal. Press the plexiglass firmly against the aquarium and secure it in place using the strong tape. Leave the tape in place for at least 24 hours to allow the adhesive to fully cure.

After that, you can remove the tape and enjoy your newly attached plexiglass panels! Remember, using plexiglass instead of glass can be a great way to create a custom aquarium that fits your unique needs.

Cleaning and Prepping the Surfaces

Preparing surfaces is a critical step in enhancing the durability of attachments in different materials. Before attaching anything to the surface, cleaning and prepping the area is necessary to ensure that it is free from any dirt, oil, or debris. Proper cleaning and preparation of surfaces increase the adhesion of glue, tape, or fasteners, making them last longer.

To prepare surfaces for attachment, you must clean them thoroughly with a cleaning solution or alcohol to remove dirt, dust, and other debris. You should also roughen the surface with sandpaper to create a better adhesion surface. Always make sure to use the proper adhesive or fastener for the material you are attaching to avoid damaging the surface.

By cleaning and prepping surfaces, you can ensure a strong and long-lasting attachment that will not fall off easily.

Applying Silicone Sealant

When it comes to applying silicone sealant, preparation is key to ensuring a successful attachment. Before starting, it’s important to clean and dry the surface area thoroughly. Any dirt or debris left on the surface can hinder the adhesion of the sealant, leading to possible leaks or gaps.

Next, use a cutting tool to create a small opening in the nozzle of the silicone tube. It’s recommended to cut the nozzle at a 45-degree angle for easier application. Slowly squeeze the trigger of the silicone gun to release the sealant, starting at one end of the joint or gap and working your way towards the other end.

Make sure to apply steady, even pressure to avoid any air pockets or bulges. Once applied, use a caulk smoothing tool or your finger to smooth out the surface and create an even finish. With proper preparation and application techniques, your silicone sealant application will be a success.

Attaching Plexiglass to Aquarium

If you’re looking for an effective way to attach plexiglass to an aquarium, you’ll need to follow a few simple steps. First, make sure that the aquarium is clean and free from any debris or dirt. Then, measure the dimensions of the plexiglass and cut it to fit the aquarium.

When attaching the plexiglass, use aquarium silicone sealant, which is designed to bond well with both glass and plexiglass. Apply the sealant around the edge of the aquarium where the plexiglass will be attached, and then press the plexiglass firmly into place. Be sure to allow plenty of time for the sealant to dry thoroughly before adding any water to the aquarium.

By following these steps, you can successfully and safely attach plexiglass to your aquarium, providing added protection and durability.

Placing Plexiglass onto Aquarium

If you are looking to attach plexiglass onto your aquarium, the first thing to consider is the thickness of the plexiglass. It should be at least half an inch thick to ensure durability and stability. Before attaching the plexiglass, you should also clean the surface of both the tank and the plexiglass to remove any dirt, dust or debris that may affect the adhesion.

To attach the plexiglass, you can use strong silicone adhesive, which can be found in your local hardware store. It is important to ensure that the adhesive is completely dry before filling the tank with water. When attaching the plexiglass, it is critical to follow manufacturers’ recommendations for curing time and application amounts.

It is also crucial to avoid over tightening the screws, as this can cause the plexiglass to crack. By following these tips, you can successfully attach the plexiglass onto your aquarium, ensuring safety for your aquatic pets.

Holding Plexiglass in Place

When it comes to attaching Plexiglass to an aquarium, the challenge is to ensure it is securely in place without damaging the tank or the Plexiglass. One effective method is to use suction cups, which can easily hold the Plexiglass in place without causing any damage. To do this, you first need to attach the suction cups to the Plexiglass using a strong adhesive.

Once the adhesive has dried, you can then position the Plexiglass against the aquarium and press the suction cups against the glass. This will create a strong grip and hold the Plexiglass firmly in place. It is important to remember to clean both the aquarium and the Plexiglass thoroughly before attaching them to prevent any dirt or debris from compromising the suction cups’ strength.

With this method, you can safely and effectively attach Plexiglass to your aquarium for a clear and stunning view of your underwater world.


Well, there you have it folks – attaching plexiglass to your aquarium isn’t rocket science, but it does require a bit of know-how and a steady hand. Just remember to measure twice, cut once, and always use the right tools for the job. And if you’re feeling particularly adventurous, why not try out some creative designs and shapes for your plexiglass panels? Who knows, you might just end up with the most stylish and envy-inducing aquarium in the neighborhood!”

Your New and Improved Aquarium with a Plexiglass Display!

If you’re looking to upgrade your aquarium, consider attaching a plexiglass display for a stunning visual impact. Plexiglass is a lightweight and durable material that can be easily attached to your aquarium to provide a seamless and clear viewing experience for your aquatic pets. The process of attaching plexiglass to your aquarium is relatively straightforward and can be completed with basic tools.

However, it’s important to ensure that the edges of the plexiglass are smooth and polished to prevent any injuries to your pets or damage to the aquarium. With plexiglass, you can also create multi-level displays within your aquarium, providing your pets with an enriched and stimulating environment. Upgrade your aquarium today with a plexiglass display and provide your aquatic pets with a new and improved home to thrive in!


What materials do I need to attach plexiglass to an aquarium?
You will need silicone adhesive, a caulking gun, and a razor blade or sharp knife.

Can I use regular silicone sealant to attach plexiglass to my aquarium?
No, you should use a silicone adhesive that is specifically designed for aquariums as regular silicone sealant can be harmful to fish.

What is the best way to clean the aquarium glass before attaching the plexiglass?
Use a non-toxic glass cleaner and thoroughly clean the glass to ensure there is no dirt or debris that could interfere with the adhesive.

How long do I need to wait before adding water to the aquarium after attaching the plexiglass?
You should wait at least 24-48 hours to allow the adhesive to fully cure and dry before adding water to the aquarium.

Can I remove the plexiglass once it is attached to the aquarium?
Yes, it is possible to remove the plexiglass but it may be difficult and could potentially damage the aquarium.

How thick should the plexiglass be for an aquarium?
The thickness of the plexiglass should be at least 3/8 inch, although a thicker plexiglass may be necessary for larger aquariums.

Is it safe to attach plexiglass to an aquarium by myself?
As long as you follow the proper steps and safety precautions, attaching plexiglass to an aquarium can be done safely by yourself. However, it may be a better idea to consult with a professional or experienced aquarium hobbyist.