If you have purchased a prefabricated aquarium or decided to design it with your own hands, then you cannot do without such an accompanying material as a sealant. An effective tool successfully replaces glue and is not a liquid, but a viscous composition based on polymers. Solidifying after application, the mass forms an elastic seam to varying degrees depending on the type of product, which acquires good waterproofing qualities. Often, such pasty helpers are indispensable when handling cracks in the case.

In addition to the ability to withstand stretching in the best way, the sealant is characterized by resistance to high pressure of water and air, temperature extremes, and exposure to sunlight. Its composition should be neutral to the materials of the entire structure, water, not cause allergic reactions and the death of local fauna and flora. For all these requirements, silicone compositions are considered ideal for aquariums. What are the most popular of them, you will learn from our rating.

TOP 5 best sealants for aquariums

5 Krass Aqua

The 300 ml container contains a black or transparent sealant, which is exclusively intended for assembly or repair work in aquariums. Its composition meets modern standards, after complete drying it is safe for fauna and flora. One package is sufficient for processing structures with a capacity of up to 400 liters. For convenience and to reduce the time for performing such work, the product is applied in an even, clot-free layer with a pistol.

What is important, after hardening, the seam does not shrink, it acquires elasticity. The advantages of aquarium owners include such quality as neutrality to the influence of detergents. One of the best products surpasses analogues in many respects, while remaining affordable. The operating temperature ranges from minus 40 degrees to plus 80 degrees. Since the mixture is of the acidic type, assembly or processing of structures must be carried out in a well-ventilated area. Within a day, the slightly vinegar smell disappears and the aquarium is ready for housewarming.

4 "Moment Herment"

Aquarium silicone sealant has repeatedly participated in ratings due to its special composition, which makes it possible to obtain an excellent waterproof structure in a short time. The water resistance of the mixture is quite high, and its working properties do not deteriorate even in contact with the marine environment. The most famous, perhaps, among consumers, the tool perfectly manifests itself both on an ordinary glass surface, and laminated or glazed.

In a standard container with a volume of 280 ml, there is a pasty mixture of a proprietary composition, which is very convenient to work with when processing surfaces and joints. Due to the elasticity of the material, it is easily and comfortably leveled in the seams. With prolonged use, the layer does not crack, does not deform.

3 Tytan Professional

The acidic agent is characterized by high-quality adhesion, which allows good adhesion of the components of both aquariums and terrariums. As a result of processing previously degreased surfaces made of glass or plexiglass, neat seams are obtained, which are durable and guarantee the necessary sealing of the entire body of the container. The sealant layer is durable, does not deteriorate under the influence of ultraviolet radiation. The mixture contains no solvents, therefore it is environmentally friendly, and the container is ready for use in a day.

The contents of the 310 ml tube are black or transparent. The choice of tone, however, only affects the aesthetic perception of the design. It is not recommended to use this product for contact with metal surfaces or natural stone.Its shelf life is 2 years, which must be taken into account when buying.

2 Penosil AQ Н1243

The product is acidic, which should be taken into account when carrying out assembly or repair work. After complete drying and hardening, it is considered safe for living organisms. The paste-like composition does not spread during application, it has the necessary adhesive capabilities. The tensile and tensile strength of the seam is comfortable enough for the safe operation of the container.

Due to the fact that the mixture is colorless and transparent, plaque, particles of food, flora can be more noticeable on it. The volume of 310 ml is sufficient even for very large aquariums. The advantage of this composition is the efficiency of the working composition in a wide temperature range (from minus 40 degrees to plus 80). Therefore, it is appropriate to use the agent primarily in structures intended for thermophilic fauna.

1 Chemlux

The silicone mixture has received numerous positive consumer reviews due to its amazing solidification strength, good adhesion to glass surfaces, and its ability to quickly set during application. This one-component composition is neutral, does not contain harmful substances, and is well tolerated by all underwater inhabitants. Colorlessness indicates the absence of dyes in the composition, that is, excess chemistry. In addition, such a tool is practically invisible at the joints and walls of the container.

The viscous mass of 310 ml is in an easy-to-use plastic tube. Thanks to the sharp tip-tip it is easy to use the sealant, the residues do not dry out, and are well stored in a sealed package. The most popular material is not only moisture resistant, but also has optimal working properties in different temperature environments, does not have an unpleasant odor.