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.

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€ 64.20

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧴 Seal smart, seal clean—your pond’s new best friend!

MESS FREE MASTERY - Innovative Smart Dispenser stops foam instantly when you do—no drips, no waste.
WATER RESISTANT SEAL - Creates a durable, water-resistant bond that stands up to pond moisture and weather.
ECO SMART REUSABILITY - Use the same dispenser up to 30 days, reducing waste and saving money.
PRECISION APPLICATION - Control every bead with exact foam flow for flawless sealing on ponds and stones.
SAFE FOR YOUR SANCTUARY - Formulated to be safe around ornamental fish and plants—protect your ecosystem.

The Great Stuff 99112849 Smart Dispenser Pond & Stone is a 12 oz foam sealant featuring a drip-free Smart Dispenser for precise application. Designed for use around ornamental fish and plants, it provides a water-resistant, durable bond ideal for pond and stone repairs. Reusable for up to 30 days, it combines convenience with eco-conscious design.

Specifications

ASIN	B07GL5MP2X
Best Sellers Rank	#144,142 in Home Improvement ( See Top 100 in Home Improvement ) #613 in Ladders (Home Improvement)
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	456 g
Liquid Volume	12 Fluid Ounces
Manufacturer	Dow
Manufacturer Part Number	99112849
Model Number	99112849
Target Species	Fish
UPC	041343012121
Unit Count	1.0 Count
country-of-origin	USA

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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