Aquarium Silicon Sealant Black 310ml

This 310ml cartridge of aquarium-grade black silicone sealant is formulated to be fully safe for fish and invertebrates once cured, containing no fungicides or antibacterial additives that can leach into aquarium water. It adheres strongly to glass, acrylic, PVC, and most ceramic surfaces, making it suitable for both new tank construction and resealing aging joints in existing aquariums. The black colour provides a clean, discreet finish that recedes against dark backgrounds and doesn't attract attention in a well-decorated aquarium. Apply with a standard caulking gun; use masking tape for clean edges. Allow 24-48 hours full cure time before filling with water. Do not expose to water during curing.