Check the listing for details. Totalpond Waterfall Foam Sealant, Black - 12 oz.. Color: Black, Condition: New. Listed at 22.97 USD. Totalpond Waterfall Foam Sealant, Black - 12 oz. Black foam fills gaps and ensures efficient water flow over rocksCompound fully cures in 12 to 24 hoursThe 12 oz. can includes a nozzle tip applicator TotalPond's Waterfall Foam Sealant is a one-component, polyurethane foam, moisture-cured mixture used to fill, seal, and bond rocks for waterfall construction. It expands 2 to 3 times the extruded bead and adheres to many surfaces. Gloves are advised.Waterfall Foam Sealant is a single-component polyurethane black foam that fills gaps and ensures efficient water flow over rocks.The foam adheres to most surfaces except: teflon, silicone, polyethylene, and other similar materials.Waterfall Foam Sealant takes approximately 5 minutes for the outer shell to dry tack-free; Compound fully cures in 12 to 24 hours.The 12 oz. can includes a nozzle tip applicator.Before using this product, make sure all surfaces the sealant will be applied to are completely dry; allow the product at least 48 hour to dry before getting it wet.When used in accordance with the instructions, this product is safe for fish and plants.Warning: Foam is extremely flammable while dispensing. Wear protective gloves, clothes, and eyewear during the application procedure. SHIPPING We ship items faster than the estimates given.Generally Items are delivered within 5 days. Occasionally It may take longer .RETURNSReturns are accepted within 30 days after delivery.Item(s) must be in the same condition as delivered and In its original packaging.Thank you! Important!We are humans and humans make mistakesBefore opening a case or leaving negative feedback , please contact us if you have questions or issues. ThanksFeedbackFeedback for feedback. Positive = Positive \ Negative = NegativeScammers and Dropshippers aren't welcomed here!