Will 12oz. cover a large area? small waterfall

This product expands a lot and is used for filling in spaces, stopping leaks around rocks and for keeping rocks from falling or moving once placed. One can should fill in around a good amount of rocks if used as intended. I had a small leak in my koi pond waterfall (a rock worked loose) and this worked beautifully for that repair.

Is is safe for my fish pond

Yes - very safe for fish ponds. I've used it on both our fish ponds for years and no issues.

will it work on WET surface

I believe the surface should be dry and clear of dirt/grease/algae,etc. when it is applied. After it cures it can be wet.

Would this repair a hole in a very thick vinyl in my Fisk pond?

I wouldn't trust it long- term against water pressure and bacteria, etc. You can buy special pond liner repair tape which is black vinyl with extra sticky waterproof glue.

Great Stuff 99112849 Smart Dispenser Pond And Stone 12 Oz

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Description

🛠️ Seal smart, live stylish—upgrade your pond game with precision foam!

VERSATILE PAINTABLE - Perfect for stone, rock, masonry, and concrete surfaces—paint over it to match your design aesthetic seamlessly.
COST EFFECTIVE REUSABLE - One 12 oz can equals up to 19 tubes of caulk and can be reused for up to 30 days with the smart dispenser.
ECO CONSCIOUS POND FRIENDLY - Formulated safe for koi ponds and aquatic plants, so your outdoor oasis stays vibrant and healthy.
LONG LASTING SEAL PROTECTION - Durable polyurethane foam provides a water-resistant, mildew- and moisture-proof seal lasting up to 10 years.
FLAWLESS APPLICATION EVERY TIME - Smart Dispenser straw ensures no drips and precise foam control—stop exactly when you want.

Great Stuff 99112849 Smart Dispenser Pond & Stone is a 12 oz black polyurethane foam designed for precise, no-drip application with its innovative smart dispenser straw. It seals, adheres, and bonds stone, rock, masonry, and concrete surfaces with a durable, water-resistant finish safe for ornamental fish and plants. Ideal for indoor and outdoor use, it offers mildew and moisture resistance with a lifespan of up to 10 years, making it a versatile, cost-effective solution for pond and fountain maintenance.

Specifications

ASIN	B07GL5MP2X
Best Sellers Rank	454,176 in Garden ( See Top 100 in Garden ) 362 in Outdoor Fountain Accessories
Brand	GREAT STUFF
Brand Name	GREAT STUFF
Customer Reviews	4.5 out of 5 stars 3,085 Reviews
EU Spare Part Availability Duration	30 Days
Global Trade Identification Number	00041343012121
Included Components	SMART DISPENSER straw
Item Form	Foam
Item Type Name	Pond & Stone
Item Weight	1.01 Pounds
Item form	Foam
Item weight	1.01 Pounds
Liquid Volume	12 Fluid Ounces
Liquid volume	12 Fluid Ounces
Manufacturer	Dow
Manufacturer Part Number	99112849
Model Number	99112849
Target Species	Fish
UPC	041343012121
Unit Count	1.0 count

Reviews

Y**P

Excelente producto

Muy rendidor, fácil de aplicar

5.11.2025

L**E

Works just like promised

17.11.2024

J**R

Good stuff!

15.08.2025

C**N

Parfait pour un terrarium.

Super pour modeler un terrarium. Mon fond de terrarium humide et effectué avec ce produit et même après un ans, il tient toujours aussi bien. À utiliser la même journée puisque le restant finis par sécher dans la paille et très difficile de le refaire fonctionner.

26.06.2025

L**.

Worked great for my snake enclosure!

14.11.2025

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