Seal the deal with confidence 💧 – stronger, faster, and fish-friendly!
MyPond MS300 is a 300ml marine-grade MS polymer sealant designed for professional-grade pond, aquarium, and window repairs. It offers 4x the strength of traditional silicone, cures underwater in just 24 hours, and bonds to a wide range of materials including concrete, glass, and metal. Its fish-safe formula ensures aquatic environments remain healthy while providing a durable, waterproof seal that withstands all weather conditions.
| ASIN | B0C2VBJ2BL |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 2,092 in Garden ( See Top 100 in Garden ) 7 in Pond Care & Water Treatment |
| Customer Reviews | 4.4 4.4 out of 5 stars (278) |
| Date First Available | 16 Oct. 2023 |
| Item Weight | 450 g |
| Manufacturer | MyPond |
| Manufacturer reference | Ms-300 |
| Package Dimensions | 23.9 x 14.4 x 10.5 cm; 450 g |
| Part number | Ms-300 |
| Style | Compact |
G**A
Very good, very messy
Quite awkward to work with, it sticks like mad to anything it touches, other than where you want it to stick or course. Cleaning it off your skin and nails afterwards is a challenge! But it cures very quickly even in cold weather and underwater and cured my leaky pond problems.
M**M
Seals great
Good product
B**N
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
D**Y
Great product
Works well on butyl liner to butyl liner and stone alike.
S**E
My Pond Build
I haven't used it as yet. I need to build my pond first. I know this is the best on the market. Looking forward to using this product when putting my pond window in.
J**N
Works really well
Great product, I used it to seal water butt connections and a dripping tap and it certainly works. Fast and easy to use
K**D
Useless....does NOT work with plastic as it claims here on Amazon!!
I used the whole tube of this to repair a pond after it clearly states here on Amazon that works on plastic. Let's face it, a LOT of ponds and liners are plastic! Unfortunately one the pond was filled, the adhesive pealed back from the plastic completely and is a total waste of money. I would send it back.... but it's all been used! What a waste of time and money. :-(
R**B
Easy to apply
Seems to be a good product really sticky I have used it to patch and repair some holes in my pond I haven’t filled up the water yet but it is holding well.
J**K
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.
J**N
Other than only available in black, this is an excellent sealant.
K**.
The item did not come with the screw on nozzle
E**.
Arrived with no top. Several other reviews mention same issue.
B**T
Arrived with no nozzle
Trustpilot
2 days ago
4 days ago
