MyPond MS300 Marine Sealant, Window Sealer, Pond Sealer for Leaks Concrete Glass Metal, MS Polymer Adhesive 4x Stronger than Aquarium Silicone Caulking, Black Pond Liner Marine Adhesive Sealant, 300ml

Easy to apply, Nice & sticky (wet finger before touching) and invisible on black liner. Most importantly, pond no longer leaks!! Would definitely recommend

Great product. Really does what you hope it will. It is very good at fixing pond linersBUTI have to take off a star becauseNo matter how careful you are it will get on something that you don't want it too.And anything that touches that, or touches the thing that touched thatAnd it's impossible to get off.

Quite awkward to work with, it sticks like mad to anything it touches, other than where you want it to stick or course. Cleaning it off your skin and nails afterwards is a challenge! But it cures very quickly even in cold weather and underwater and cured my leaky pond problems.

Used on a repair to a damaged butyl liner at the edge of a very large pond, to seal a few large holes then to stick a patch over the top. Worked very well. Will definitely use again if needed.

Excellent product

Very messy and very difficult to get off your hands. It will stick to anything it touches permanently so make sure you are wearing old clothes. I wish there was a warning about this on the product.

Fitted pond window using it, had 6 tubes only need 4 to fit the glass window so far works great, fined it slow drying so have to do it in layers to get a full seal all the way around.

Sealed the leak no problem.