TotalPond 12 oz. Pond & Waterfall Foam Sealant, Dark Gray Expanding Polyurethane Spray Foam With Nozzle Tip, For Rock Gaps & Water Flow Control, Safe For Fish, Waterproof, Flexible, & Durable Adhesive

Worked exactly how I needed it to. It is as it's described. Follow the instructions and you won't be disappointed.

Excellent product I used it on my waterfalls. Very strong. They did exactly what I needed it to do

Works great for the fountain. Dried quick and looked really good. Word of caution, wear gloves! Was very hard to get off hands. Overall great stuff

Good product overall. Fills gaps nicely and helped adhere stones in place around water fall. Just wished it went a little further for the money. Wear gloves while using. Very hard to get off skin and nails.

Will use. Looks like it’s going to be exactly what I needed.

Works but as a lot of people have said you loose half the can! I did the first spray in moderation to be safe because it does expand quickly and when I went to go in the next day to fill in the remaining, it would not work and I could feel a ton of products still in the can very bummed because it is expensive. Don’t think I will be buying this again.

I haven't tried it with water yet, so not exactly sure if it holds well until I finish the entire pond. I did make the mistake of spraying way too much so it expands very well, I'm going to have to fix that. I got some on my hand and it's very hard to get off so be sure to wear gloves! I could have covered more area of I didn't waste most the can spraying too much! It's messy, so take your time, the size of the cans were larger then expected about your normal spray paint can size but a little more in depth, it's very easy to use just be careful with your straw getting too much on the end because it's sticky and spreads like tar if you make that mistake like I did. I will be ordering more. Let's just hope this works and helps my leak as well as keep unwanted over flow of outside water out when it rains around the pond..I have a big mess to clean once it's settled and half of it I wasted as it's still expanding ten minutes later 😭😭 learning experience

Total waste of money. Valve and tube design is junk. It stopped working after dispensing a tiny amount. I bought Great Stuff Pond foam as a replacement, which has a much better valve.

Worked well!! Stopped the leak in a bout 3 hours time after curing

Good

Good product easy to apply, expands a lot 10-15 mins after application and blends in well with pond. My only complaint is that it doesn't go as far as I thought it would. In hindsight I should have bought the bigger cans. Be aware that you only need a small amount as it expands bout 20 times it's volume. All in all a good product and I recommend it for all pond or landscape use.

The product itself is great. Disappointed to find that I paid almost double what it cost in stores.

I found the nozzle difficult to dispense, but once on, it did the job it was supposed to do.