Will this work to seal a few small holes in a black pond liner? The holes are on a horizontal planting shelf.

I would recommend firestone primer, seam tape and cover tape instead for the right way to patch holes in 45 mil epdm rubber.

We wouldn’t recommend it. The silicone is for sealing liner to faceplates with screws and any plumbing parts that are threaded and might need extra sealing. It can also be used in place of Teflon tape. The Pond Company

Can i build a new aquarium with this?

Yes, I think clear would be more aesthetically pleasing but this should work for a glass aquarium. I wouldn't use it for acrylic.

Will this work to seal around a Rubbermaid 100 gallon horse trough—around the rectangular piece of the bulkhead? No leak from threads

I have a 3500 Gallon Koi Pond and it sealed a couple of leaks I had in my liner very well. I was losing about 6 inches of water a day and once I found the tears in my liner I applied the sealant around the tear and pushed it into place. It has bee holding water without leaking for several weeks now so I'm thinking yes, it will hold in your application. It goes on very wet but seals to a hard surface. Good Luck.

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Description

💧 Seal it like a pro—waterproof, flexible, and fish-friendly!

FISH WILDLIFE SAFE - Non-toxic formula ensures a healthy aquatic environment
MULTI SURFACE MASTER - Adheres flawlessly to metal, tile, glass, wood, and more
UV TEMPERATURE TOUGH - Withstands sun exposure and extreme weather without cracking
ULTIMATE WATERPROOF BOND - Seals ponds, aquariums & water features with airtight precision
LONG SHELF LIFE FAST CURE - 24-month shelf life and full cure in just 24 hours for quick, reliable repairs

Aquascape Black Silicone Sealant is a premium, fish-safe adhesive designed for ponds, aquariums, and water features. It offers superior waterproofing, UV resistance, and flexibility, bonding securely to a wide range of surfaces. With a 24-hour cure time and a 24-month shelf life, it’s the go-to sealant for durable, eco-conscious aquatic projects.

Reviews

E**S

Fast acting!

Very good product, the best I've tried thus far.

11.08.2025

M**2

Great product for sealing seams or gaps in your pond

I highly recommend this product for sealing seams or gaps in your pond. I used it around a leaky waterfall feature. It went on easily using a caulk gun and remained very flexible once it cured after 30 minutes.

25.07.2025

E**G

Works great.

Perfect for windows.

9.08.2025

T**Z

I wanted to give this 5 stars.... BUT

I'm no stranger to aquarium sealant or using silicone on tanks.My first impression of this sealant was AWESOME. It is hard to get out of the tube. I kept making the hole bigger and bigger but it's just really thick compared to the usual clear sealant. I'm assuming that is due to the black coloring. No big deal. I was sealing the outside of a leaky acrylic frog tank.The overall smell of the sealant is no worse then the regular clear aquarium stuff. Honestly, I think it smells LESS then the clear stuff!Besides being slow to come out of the tube it was going on VERY smooth. About 1/2 way around my tank I'm thinking just how great this looks and .... BAMYou have to put so much pressure to get it to come OUT of the tube that it busted the bottom of the tub clean open. Leaving a blobby mess. Now I'm not sure what to do as I have a huge blob of sealant hanging out the bottom so I decided to start trying to layer that around the bottom of my tank rather then waste it. That's when things just got messy.Be warned this sealant dries FASTER then the clear stuff. By the time I got the blob layered around the rest of my tank it was starting to dry and get grainy. At this point it was the best I could do with the disaster.Now I have 2 more tanks to do and I haven't decided if it's worth using the black stuff or just switching to the clear.It does look nicer on the black bottom rim so maybe I'll order another tube and try again.

29.08.2020

J**S

Great product

Is as described. Used in a Koy pond that was given to me that had several holes and slices in it. Allow 24 hrs to dry before applying water it helps

18.07.2025

R**R

Cleaned. Very good first

I silicone my pond filter. I'm using a 50 gallon plastic drum. Wiped everything down with alcohol first .Worked real good so far

30.07.2025

B**.

Happy with product

Worked great

11.08.2025

M**N

Apply liberally

After using a variety of different products trying to patch a hole in our outdoor pond this was the winner! It was easy to use, dried and cured quickly, and the only thing that has worked to keep our pond liner from leaking. I put a 3 inch screw in the tip to cap the remaining product from drying out. We’re very happy with this product

30.05.2025

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