MS300 Marine Grade Pond Sealant, Black, 300ml

Good stuff done the job

My half barrel nature pond was leaking at the top. I used this to plug the leaks & it worked really well. I didn’t have to drain the pond first which saved a lot of work. Would definitely use again.

Great product

Great product. Really does what you hope it will. It is very good at fixing pond liners BUT I have to take off a star because No 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 that And it's impossible to get off.

Works really well ( ie waterproof).

I had a large crack along the ridge of my 30yr old plastic pond, and removing the established pond would have been a major job. I spotted the MyPond Marine Sealant but was a bit sceptical at first. According to the instructions it’s harmless to pond life and fish which was the most important bit to me! … I used the colour Black to match the pond which is easily applied by the use of a sealant gun, “however be warned” wear disposable rubber gloves! As it’s difficult to remove from skin. I got some on my wrist, but used “Isopropyl liquid” to get it off without any drama. There is a slight odour although nothing to worry about. After filling the large crack I smoothed it off with a putty knife and allowed it to set for 24 hrs, then topped back up with water. The end result is Great, no leaks whatsoever. I’ve also covered the area over with a large flat decorative stone which just overhangs enough to hide the repaired area…. it’s now 2 months since I repaired the crack and everything is looking good, and will keep my eye on it’s durability over the next 12 months and beyond… For me it’s been a very cost effective lifesaver and would definitely use again if needed.

Did the job, sealed the crack in my concrete pond, even below the waterline. Best to use gloves though as would be hard to remove from skin.

Fixed quite a large hole in pond liner,had a piece of spare liner that I fixed over the hole and it's not leaked.

Excellent, works as promised.

The reason I returned it ,is because it needs a primer for concrete and the specific primer for humid septic tanks is very expensive

Other than only available in black, this is an excellent sealant.

Good

Our rubber lining seam had come open below the water line due to drought and the ground moving. When we realized that we needed help fast. This stuff worked perfectly. Caulked the open seam right in the water and pressed it closed with some rocks. The next day we could refill and the waterline didn't drop. We'll be buying more.