SILICONE SEALANT

The Black Silicone Sealant – 4.7 oz / 139 ml is a flexible, waterproof sealant ideal for sealing joints, gaps, and leaks in water features, ponds, aquariums, and outdoor projects. Its strong bonding and UV-resistant properties make it perfect for small-scale applications requiring long-term durability.

This non-toxic, weatherproof silicone remains flexible after curing and adheres well to plastic, metal, glass, stone, and most pond liner materials. Safe for aquatic life once cured, it’s a must-have for DIY pond builders and small repairs.

The Black Silicone Sealant Tube – 10.1 oz / 316 ml is a professional-grade sealant designed for large pond builds, water features, aquariums, and other outdoor sealing needs. Formulated to create a strong, waterproof bond that remains flexible, it is ideal for sealing between stone, concrete, liner edges, or plumbing fixtures.

Once cured, it’s safe for aquatic life and resists UV exposure, temperature changes, and water pressure. Its black color blends well with pond liners and natural rock surfaces for a clean finish.

The Clear Silicone Sealant Tube – 10.1 oz / 316 ml is a versatile, transparent sealant perfect for projects where clean visibility and strong adhesion are key. This 100% silicone formula is waterproof, UV-resistant, and remains flexible after curing—ideal for sealing aquariums, fountains, pond liners, and outdoor fixtures.

Its clear finish blends seamlessly with surrounding materials, making it great for glass, plastic, stone, and metal. Safe for fish and plants once cured, it’s the go-to choice for transparent waterproofing in aquatic environments.

• Free Shipping is valid for orders with a subtotal exceeding $199 and all orders will be shipped via UPS. Items purchased for delivery after 3pm will ship the following day. Items purchased for delivery after 3pm on Friday will ship Monday.
• Koi Fish only ship Monday- Wednesday. For orders placed after 3pm on Wednesday, the order will be shipped the following Monday.
• For Motor Freight (LTL) Shipments, oversized or heavy items unsuitable for traditional parcel delivery will be dispatched through a motor freight carrier, as indicated on the product page. Once the carrier receives your order, they will reach out to arrange a delivery time. An individual aged 18 or older must be present to sign for the delivery.
• You may return or exchange an unused or unopened item for a refund (excluding shipping and handling charges) within 30 days of purchase. Following 30 days, the item may be returned in exchange for a store credit. Used chemicals and fish food are not returnable. In addition, all sales on Japanese Koi are final and non-refundable. Should you have any questions or concerns when your fish arrive, please call 908-420-9908.