Hot Glue Aquarium Safe

Is Hot Glue Aquarium Safe?

Hot glue guns have become a regular part of our lives and have prevented a lot of problems. We reuse things, and the hot glue gun becomes a savior in this regard. Keeping an aquarium and maintaining it is a heavy task. Thanks to the hot glue, which fixes things up in the aquarium and gets it going. However, the chemical composition of hot glue may confuse you with a question I asked myself in the past: Is hot glue aquarium safe?

As far as my experience is concerned, yes. You are currently on the right track by applying hot glue to the damaged aquarium parts; it will work as your dependable friend. Cooling it down before it touches water will make it safe for our aquarium and aquarium life.

Using hot glue in an aquarium requires effort and concern with the right knowledge. The pros and cons of hot glue do matter a lot in this regard. Let us take it step by step to determine whether hot glue can be used to repair the aquarium. Stay tuned!

Diving into Details: Is a hot glue aquarium safe?

Yes, it is safe so far; all the necessary measures have been taken. You need to be careful when you make a match between hot glue and your water tank. 

So let us find out whether it is safe or unsafe, temporary or permanent. Frankly speaking, it is not made for this purpose, but you can use it as an alternative when you find an aquarium damaged and need a quick hack. 

It doesn’t alter the parameters of the water when it cools down, so there is no question of chemical harm to the aquarium’s life. However, if the glue is wet and comes into contact with water, it can release fumes that are not good. 

Hot glue—how does it work?

Hot glue is made up of polystyrene and polymer resin, both of which are used to make disposable cups and plates. I hope it clarifies how long the glue can stay connected inside the aquarium. Hence, it is not the best choice, but yes, it is a safe alternative at times. 

Hot Glue gun

Easy 6 steps of using this in the aquarium

Here is a simple method of using this in the aquarium or on any other surface:

  • Push the glue stick into the hot glue gun.  Hot Glue Gun, 100W Hot Melt Glue Gun, is a good choice to support your gluing procedure. 
  • Apply it to both broken surfaces after cleaning them from dust
  • Join them together until they are well-stuck. 
  • Most importantly, let the applied area cool down completely before putting it in water.
  • Place the item in the aquarium once the glue has cooled and set, or if you have repaired a section of the aquarium, fill it back up after the repaired area has cooled.  

Is hot glue waterproof? 100% water resistant

Yes is the short answer; however, further explanations let us know that it is 100% water resistant, its adhesive is easygoing with differentiating temperatures, and it survives eroding or other solvents. The final fact is that it surely has an extremely strong adhesive.  Gorilla Hot Glue Sticks are strong and weather resistant.

Besides, in comparison to other adhesives, it is not too strong. It is better to discuss the fundamental characteristics of hot glue and its advantages and disadvantages because the discussion may continue. 

is hot glue aquarium safe

The fact file for the hot glue shows the main properties, which explain the purposefulness of the glue. You can well imagine the places and things where it is more efficient. So far, the concern about hot glue being waterproof or not has been addressed. 

Related article: Exploring the Pros and Cons of Sand in Your Aquarium

Common 4 facts about the hot glue’s strength:

Here are some detailed facts about the glue’s strength:

  • The denser interlaced polymer makes the glue water resistant and water molecules cannot pass through.
  • Glue’s liquid contains strands of polymer and no water at all.
  • Thermoplastic substances like polyamides work well to seal porous holes and resist water.
  • Ethylene Vinyl Acetate (EVA) and Amorphous Poly Alpha Olefins (APAO) are also part of hot glue, which helps it get waterproof quality.

The discussion of the prolonged contact between water and hot glue is, however, of utmost importance. Or you can say that the glue is under water. 

It is a game of temperature. The glue material forms holes and seams as the water’s temperature falls. Therefore, the glue separates from the joined material as the water energy rises. 

Similarly, the rise in temperature causes the hot glue to melt and cool again to return to its original state. 

Is hot glue safe for reptiles -once it is dried up?

Yes, it really is safe for reptiles, but only once it is dried up. Lizards won’t really try to munch on it. However, never immerse it in water, as this could cause it to degrade. The advice here is never to leave hot glue on surfaces because it can hurt reptiles if they ingest it before it dries up. According to different claims, hot glue is both unsafe and safe for reptiles.

Well, the story doesn’t end here. There are certain things you need to know and take care of. The hot glue, even after drying, can break under weight and pressure and can get exposed to reptiles. Plus, solvent-based glue can be dangerous even when cured and cause chemical damage to reptiles. Selecting a suitable glue type is important.  

Sometimes, if the glue drips into the water, it becomes dangerous. The reptile’s shells, like turtle shells, are also glued. This can be dangerous if you do not consider the glue manufacturer. The combination of chemicals varies with the manufacturer.


What other adhesives are more effective than hot glue in aquariums?

Some of the glue types that are water resistant and can withstand both high and low temperatures include epoxy, super glue, and aquarium-safe silicone. However, you still need to be smart when choosing a silicone brand.

Is there any emission of fumes from the hot glue?

Yes, the hot glue, when not fully cured and cooled down, can release fumes into the water. The fumes are dangerous for aquarium life. However, once cooled, it is free from the danger of emitting fumes 

Is hot glue affected by the temperature change?

Yes, it does vary when it is underwater and the temperature changes. Even heavy 

weight pressure and weathering cause holes and microscopic seams in the glue 


Which materials go well with hot glue?

Plastic is more than friendly to hot glue. Other materials where it works are ceramic, glass, wood, and fabric. Hot glue is pretty popular in the fashion industry.


Hot glue is a material that you can consider a useful sealant in the aquarium, but it has a temporary value in water. The quality it provides for bonding is weak. Still, it is a quick hack. Be considerate of the manufacturer, preventive measures, and aftermath of the application for a better result.