Betta Silicone Sealant – High-Strength Aquarium Sealant

Betta Silicone Sealant is a durable, waterproof solution specifically developed for sealing and repairing aquariums. This one-part, acetoxy curing high modulus silicone provides outstanding adhesion to smooth, non-porous surfaces such as glass and metal, forming a flexible yet strong seal that accommodates joint movement of ±25%. Available in clear or black, this easy-to-apply sealant is perfect for both new aquarium builds and maintenance repairs.

Key Features:

• Strong & Waterproof – Creates a high-strength, flexible seal for long-lasting durability.
• Safe for Aquariums – Designed specifically for aquatic environments.
• Fast Curing – Tack-free in 15 minutes, fully cured in 1-5 days, depending on joint size.
• Versatile Application – Ideal for sealing, repairs, and bonding glass or metal surfaces.
• Available in Multiple Options – Choose from clear or black silicone to suit your setup.

Directions for Use: Ensure surfaces are clean, dry, and sound before application. Apply the sealant firmly into the joint for a solid fill, using a spatula or stick for smoothing. Allow full curing before introducing water.

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.