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MS300 Marine Sealant by MyPond is a professional-grade, hybrid polymer adhesive that delivers 4x the strength of traditional silicone. It cures underwater in just 24 hours and bonds to a wide range of materials including concrete, glass, metal, and wood. Designed for pond, aquarium, window, and marine repairs, it is fully fish-safe once cured and remains flexible to withstand outdoor elements, making it the ultimate sealant for durable, waterproof protection.
| Asin | B0C2VBJ2BL |
| Best Sellers Rank | 1,753 in Garden (See Top 100 in Garden) 20 in Pond Care & Water Treatment |
| Brand | MyPond |
| Compatible Material | Concrete, Stone, Wood, Glass, Metal, Rubber, Plastic, Fiberglass, Acrylic, Glass Reinforced Plastic, Porcelain, Vinyl, StoneConcrete, Stone, Wood, Glass, Metal, Rubber, Plastic, Fiberglass, Acrylic, Glass Reinforced Plastic, Porcelain, Vinyl, Stone |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.4 4.4 out of 5 stars (341) 4.4 out of 5 stars |
| Item Form | Liquid |
| Manufacturer | MyPond |
| Manufacturer Part Number | Ms-300 |
| Material | Silyl Polyether Polymer |
| Number Of Items | 1 |
| Style Name | Compact |
| Surface Recommendation | Window |
| Unit Count | 300.0 millilitre |
| Water Resistance Level | Waterproof |
User
Good sealer
Have used it before it works and work well, the go to sealer
User
My Fish Tanks
This is great stuff
User
It works ,its sticky
It works ! fountain no longer leaks , it was important for it to be non toxic. Get everything ready in advance including a waste bag, def wear disposable gloves
User
Expensive but effective
I used this to repair a tear in a pond’s liner. Having cut a small patch of liner about 20mm larger than the tear, I applied the sealant all over and around the tear then placed the patch over it. Allowed recommended 24 hours to cure then refilled the pond. Three days later it seems to have worked perfectly with no apparent drop in level.
User
Quality of product
Love this product great adhesive power
User
Doesn't work with preformed pond liners
Seams like decent stuff, but would not adhere to a pond liner and concrete seam and had all fallen off by the following day.
User
Good product.
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.
User
Does the job.
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.
User
WORKS
Excellent, works as promised.
User
It's a good good sealant but,
The reason I returned it ,is because it needs a primer for concrete and the specific primer for humid septic tanks is very expensive
User
Stronger than aquarium silicone
Other than only available in black, this is an excellent sealant.
User
Nitido
Good
User
Love this
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.
Trustpilot
3 weeks ago
1 month ago