Sealants & Silicone

Marinelands HoldFast Epoxy Stick has superior bonding ability that allows you to create steps, caves, cliffs, and walls for aquarium animals to enjoy. It bonds all types of materials from rocks, to corals, to slate, and many more.

• Bonds live rock, slate, plants and corals
• Easy to use
• Safe for freshwater and marine tanks, safe for all fish and invertebrates

HoldFast epoxy stick is non-toxic to fish and invertebrates and is great for use in freshwater or saltwater.

Marineland HoldFast epoxy stick mixes easily in the palm of your hand - no messy liquids to measure and mix. Just break off a piece, knead it in your hand until it turns white, and it is ready to bond.

This Hold Fast Epoxy Stick will begin to harden after 7 minutes and will dry within 30 minutes. You can sand, fill or drill within an hour of use.

Aqueon Silicone Aquarium Sealant creates a permanent, water-tight seal with the same strength as the sealant used to manufacture new aquariums. This 100% silicone sealant is permanently flexible, non-toxic, safe for fresh or saltwater tanks, and will not crack or shrink.

• Permanently flexible, does not crack or shrink
• Same strength silicone used in manufacture of new aquariums
• Non-toxic for use on fresh and saltwater aquariums
• Long-lasting bond is easy to apply

Made in the USA.

Aqueon Silicone Aquarium Sealant creates a permanent, water-tight seal with the same strength as the sealant used to manufacture new aquariums. This 100% silicone sealant is permanently flexible, non-toxic, safe for fresh or saltwater tanks, and will not crack or shrink.

• Permanently flexible, does not crack or shrink
• Same strength silicone used in manufacture of new aquariums
• Non-toxic for use on fresh and saltwater aquariums
• Long-lasting bond is easy to apply

Made in the USA.

Aqueon Silicone Aquarium Sealant creates a permanent, water-tight seal with the same strength as the sealant used to manufacture new aquariums. This 100% silicone sealant is permanently flexible, non-toxic, safe for fresh or saltwater tanks, and will not crack or shrink.

• Permanently flexible, does not crack or shrink
• Same strength silicone used in manufacture of new aquariums
• Non-toxic for use on fresh and saltwater aquariums
• Long-lasting bond is easy to apply

Made in the USA.

Aqueon Silicone Aquarium Sealant creates a permanent, water-tight seal with the same strength as the sealant used to manufacture new aquariums. This 100% silicone sealant is permanently flexible, non-toxic, safe for fresh or saltwater tanks, and will not crack or shrink.

• Permanently flexible, does not crack or shrink
• Same strength silicone used in manufacture of new aquariums
• Non-toxic for use on fresh and saltwater aquariums
• Long-lasting bond is easy to apply

Made in the USA.

Seachem CoralCrete Epoxy Adhesive securely attaches coral to decorative rockwork in freshwater, marine and reef aquariums. This two-part epoxy putty may also be used to fuse together a stable rockwork foundation for future coral growth. Available in gray or purple, CoralCrete is a must-have for aquariums with branching, polyp, or plating corals.

• Secures coral to rockwork
• Fully cures submerged or emerged within 24 hours
• Matches synthetic reef rock
• Safe for marine & freshwater aquariums

Directions: For sensitive skin, wear latex gloves. Cut off desired amount of CoralCrete. Replace unused CoralCrete into plastic storage tube. Remove film and knead CoralCrete together until uniform color is achieved. Once mixed, CoralCrete can be used to adhere coral or rock, either submerged or emerged. Press firmly around base or contact point of coral or rock to ensure CoralCrete penetrates pores and surface grooves. Curing begins in about 5 minutes, hardening in about 15 minutes. CoralCrete cures fully in 24 hours. Protein Skimmers may over-activate during cure time.

Note: There is no functional difference between the purple and gray epoxies. Choose whichever color best matches your rock and coral coloring.

Seachem CoralCrete Epoxy Adhesive securely attaches coral to decorative rockwork in freshwater, marine and reef aquariums. This two-part epoxy putty may also be used to fuse together a stable rockwork foundation for future coral growth. Available in gray or purple, CoralCrete is a must-have for aquariums with branching, polyp, or plating corals.

• Secures coral to rockwork
• Fully cures submerged or emerged within 24 hours
• Matches synthetic reef rock
• Safe for marine & freshwater aquariums

Directions: For sensitive skin, wear latex gloves. Cut off desired amount of CoralCrete. Replace unused CoralCrete into plastic storage tube. Remove film and knead CoralCrete together until uniform color is achieved. Once mixed, CoralCrete can be used to adhere coral or rock, either submerged or emerged. Press firmly around base or contact point of coral or rock to ensure CoralCrete penetrates pores and surface grooves. Curing begins in about 5 minutes, hardening in about 15 minutes. CoralCrete cures fully in 24 hours. Protein Skimmers may over-activate during cure time.

Note: There is no functional difference between the purple and gray epoxies. Choose whichever color best matches your rock and coral coloring.

Seachem CoralCrete Epoxy Adhesive securely attaches coral to decorative rockwork in freshwater, marine and reef aquariums. This two-part epoxy putty may also be used to fuse together a stable rockwork foundation for future coral growth. Available in gray or purple, CoralCrete is a must-have for aquariums with branching, polyp, or plating corals.

• Secures coral to rockwork
• Fully cures submerged or emerged within 24 hours
• Matches synthetic reef rock
• Safe for marine & freshwater aquariums

Directions: For sensitive skin, wear latex gloves. Cut off desired amount of CoralCrete. Replace unused CoralCrete into plastic storage tube. Remove film and knead CoralCrete together until uniform color is achieved. Once mixed, CoralCrete can be used to adhere coral or rock, either submerged or emerged. Press firmly around base or contact point of coral or rock to ensure CoralCrete penetrates pores and surface grooves. Curing begins in about 5 minutes, hardening in about 15 minutes. CoralCrete cures fully in 24 hours. Protein Skimmers may over-activate during cure time.

Note: There is no functional difference between the purple and gray epoxies. Choose whichever color best matches your rock and coral coloring.

Struggling with your aquatic hardscape designs Well, Seachem has a solution for you! Flourish Epoxy is a powerful epoxy adhesive that helps safely and securely create planted aquarium hardscape designs out of materials such as rocks and driftwood. Simply balancing large piles of rocks in the aquarium can result in these structures collapsing and damaging your aquarium or worse, harming your fish. Instead of leaving it up to chance, use Flourish Epoxy to secure your hardscapes. For added benefit, the solution is incredibly fast-acting, with a working time of only 5 minutes and will fully cure both submerged or emerged within 24 hours! Completely safe for even the most sensitive aquarium inhabitants.

• Powerful epoxy adhesive
• Ideal for planted tank hardscapes
• Safely secures rocks and driftwood
• Fully cures within 24 hours
• Safe for all aquarium inhabitants

The epoxy is gray in color and comes in a 4 oz tube

Struggling with your aquatic hardscape designs Well, Seachem has a solution for you! Flourish Epoxy is a powerful epoxy adhesive that helps safely and securely create planted aquarium hardscape designs out of materials such as rocks and driftwood. Simply balancing large piles of rocks in the aquarium can result in these structures collapsing and damaging your aquarium or worse, harming your fish. Instead of leaving it up to chance, use Flourish Epoxy to secure your hardscapes. For added benefit, the solution is incredibly fast-acting, with a working time of only 5 minutes and will fully cure both submerged or emerged within 24 hours! Completely safe for even the most sensitive aquarium inhabitants.

• Powerful epoxy adhesive
• Ideal for planted tank hardscapes
• Safely secures rocks and driftwood
• Fully cures within 24 hours
• Safe for all aquarium inhabitants

The epoxy is brown in color and comes in a 4 oz tube

Seachem Silicone Sealant is a top-of-the-line 100% RTV silicone sealant designed to seal and repair freshwater and saltwater aquariums. The formula creates a permanently flexible, watertight seal with a high tensile strength that won't crack, dissolve or shrink from the pressure or stress caused by the weight of water in your tank. The solution provides unmatched adhesion and sports a clear color.

• High quality silicone sealant
• 100% RTV silicone
• Suitable for freshwater and saltwater aquariums
• Won't crack, dissolve or shrink
• Provides a watertight seal

The sealant is clear in color and comes in a 3 oz tube

Seachem Silicone Sealant is a top-of-the-line 100% RTV silicone sealant designed to seal and repair freshwater and saltwater aquariums. The formula creates a permanently flexible, watertight seal with a high tensile strength that won't crack, dissolve or shrink from the pressure or stress caused by the weight of water in your tank. The solution provides unmatched adhesion and sports a clear color.

• High quality silicone sealant
• 100% RTV silicone
• Suitable for freshwater and saltwater aquariums
• Won't crack, dissolve or shrink
• Provides a watertight seal

The sealant is black in color and comes in a 3 oz tube

Seachem Reef Glue is a superior bonding gel, powerful and versatile enough for a wide variety of aquarium applications. Use for aquascaping, repairing plastics, and gluing or mounting coral frags to reef rock. It bonds within seconds for excellent control and ease of use.

• Superior cyanoacrylate gel for aquarium applications
• Bonds within seconds for excellent control, hold and durability
• Use for aquascaping, repairing plastics and mounting coral frags
• Can be used underwater
• Suitable for fresh and saltwater

Reef Glue comes in an aluminum tube for extended life and stability, beyond that of products contained in plastic bottles. Will not dry in tube.

Directions: To adhere frags, colonies, or for general aquascaping, first test fit the item to be glued onto the site it is to be adhered. Note the contact points the item has with the site. Retrieve the item and, while not submerged, place a small amount of glue on each site contact point. Quickly fit the item onto the site again. A skin will form over the glue upon contact with water. It is helpful to break this skin slightly while in contact with the site. Hold the item down for about 15 seconds (more in areas of strong flow). Check that the item is secure. Repeat as necessary in order to build up a small amount of glue for a more secure hold.

Seachem Flourish Glue bonds your aquarium plants and moss to rocks, driftwood and gravel in seconds, eliminating the hassle of using thread or weights to keep them in place. Flourish Glue has superior control, hold and durability and can be used underwater in fresh and saltwater aquariums.

• Attach moss and plants to rocks, driftwood and even gravel
• Eliminate the hassle of thread and weights
• May be used underwater in fresh or saltwater aquariums

Flourish Glue is incredibly easy to use, and is especially useful for planting bunch plants. Just apply the gel, plant as usual and the plant will stay rooted in the substrate.

Flourish Glue is a cyanoacrylate gel that can be used for any aquascaping needs or plastics repairs. It comes in an aluminum tube for extended stability beyond products in plastic bottles, and will not dry up in the tube with the cap properly secured.

Directions: Dispense a small amount of glue prior to each use. Apply a small amount of glue to moss or plant roots and press against desired surface for 20 seconds. For bunch plants, apply glue and plant as usual. Wipe tip free of glue before replacing the cap.

Warning: Cyanoacrylate. Danger. Bonds skin and eyes in seconds. Keep out of the reach of children. Eye and skin irritant. If eye contact occurs, rinse with water for 5-10 seconds.

Perfecto Silicone Aquarium Sealant is a multi-use, 100% clear silicone rubber adhesive that stays flexible and creates a waterproof seal. Use it to repair leaky aquariums, build small aquariums and fix broken ornaments.

• 100% clear silicone rubber for repairing and building aquariums and ornaments
• Stays flexible and creates waterproof seal
• Will not crack or shrink
• Harmless to fresh and saltwater fish

Caution: Avoid contact with skin and eyes. Keep out of reach of children.