£12.79

MyPond MS300 Marine Sealant, Window Sealer, Pond Sealer for Leaks Concrete Glass Metal, MS Polymer Adhesive 4x Stronger than Aquarium Silicone Caulking, Black Pond Liner Marine Adhesive Sealant, 300ml

Price data last checked 88 day(s) ago - refreshing...

View at Amazon

Price History & Forecast

Last 3 days • 3 data points (No recent data available)

Historical
Generating forecast...
£12.79 £12.15 £12.41 £12.66 £12.92 £13.17 £13.43 23 January 2026 23 January 2026 24 January 2026 24 January 2026 25 January 2026

Price Distribution

Price distribution over 3 days • 1 price levels

Days at Price
3 days 0 1 2 2 3 £13 Days at Price

Price Analysis

Most common price: £13 (3 days, 100.0%)

Price range: £13 - £13

Price levels: 1 different prices over 3 days

Key Features

RELIABLE DIY POND REPAIR SOLUTION: MyPond heavy duty A+ grade hybrid adhesive or hybrid sealant make repairs and upgrades simple for DIY enthusiasts and professionals. This marine grade pond sealant helps you fix leaks and improve your pond or aquarium for long-lasting results. Our marine grade silicone sealant, waterproof hybrid polymer sealant works excellently as a pond leak sealer, fountain sealer, and even a koi pond sealer, ensuring durability for all your water features.

STRONGER THAN TRADITIONAL SILICONE: Our pond sealant fish safe is 4 times stronger than regular waterproof silicone sealant, providing superior sealing power for your pond and water features. Whether you need a pond sealer, pond leak sealer, or aquarium MS polymer sealant, our marine grade MS polymer adhesive sealant ensures fewer repairs and long-lasting protection. It also works well as a glass sealant, window sealant, pond window sealer, or even a gutter sealant for rain gutters.

FAST CURING UNDERWATER: This waterproof MS polymer glue cures underwater in just 24 hours, saving you time and hassle on your DIY pond projects. Ideal for use as a pond sealer, pond leak sealer, or underwater sealant, it provides quick, reliable results. Whether you're sealing a fish pond or repairing an aquarium, this aquarium silicone black marine silicone, pond sealer for leaks ensures your projects are completed efficiently, with lasting results.

VERSATILE AND FLEXIBLE BONDING: Our MS polymer adhesive bonds securely to materials like concrete, stone, wood, glass, metal, rubber, plastic, and fiberglass. This makes it a versatile choice for a wide range of projects, including as an aquarium sealant, aquarium caulk, window crack repair and marine sealant for all water-based applications. It works as a fish pond sealant, fountain sealer, and even for koi pond repairs.

FISH-SAFE FORMULA FOR AQUATIC LIFE: Ensure the safety of your aquatic life with our pond sealer safe for fish. This fish pond sealant is great for maintaining a healthy, natural environment in your pond. Whether you're using it as a pond leak sealer, marine grade MS polymer sealant, aquarium MS polymer sealant, or reptile safe sealant, our MyPond MS300 sealant, marine caulking keeps your water feature safe for fish, plants, and reptiles alike.

Product Specifications

Barcode

No barcode data available

Similar Products You Might Like

Multipurpose 100% Silicone Sealant (12 x 8.4 fl oz) Clear Waterproof 12 Pack
92% match

Multipurpose 100% Silicone Sealant (12 x 8.4 fl oz) Clear Waterproof 12 Pack

Mitreapel

£109.70 21 Nov 2025
5PCS Aquarium Glue - Fast Curing, Waterproof Reef & Moss Glue for Aquascaping, Fish Tank Sealant, Clear Silicone Sealant for Plants & Decor
91% match

5PCS Aquarium Glue - Fast Curing, Waterproof Reef & Moss Glue for Aquascaping, Fish Tank Sealant, Clear Silicone Sealant for Plants & Decor

EveBeaty

£5.49 31 Jan 2026
S4ALL PRO Hybrid Polymer Sealant - 290ml, Anti-Mould, Waterproof
91% match

S4ALL PRO Hybrid Polymer Sealant - 290ml, Anti-Mould, Waterproof

S4ALL PRO

£6.49 17 Feb 2026
Crystal Clear Kitchen & Bathroom Sealant & Adhesive Hybrid Polymer | Superior to Bathroom Silicone Sealant | Waterproof, Odourless, Anti-Mould | Ideal For Kitchen & Around Bath & Shower - 300ml 1 Pack
91% match

Crystal Clear Kitchen & Bathroom Sealant & Adhesive Hybrid Polymer | Superior to Bathroom Silicone Sealant | Waterproof, Odourless, Anti-Mould | Ideal For Kitchen & Around Bath & Shower - 300ml 1 Pack

Hemway

£14.95 01 Feb 2026
XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing
91% match

XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing

XFasten

£25.99 01 Feb 2026
3X Bond it Clear HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank
91% match

3X Bond it Clear HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank

Bond It

£11.32 17 Mar 2026
XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (Single Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing
91% match

XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (Single Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing

XFasten

£12.99 01 Feb 2026
BlissMart White Silicone Sealant Waterproof Strong White Glue x 2 Tubes Multipurpose Bathroom Silicon Seal Mold Resistant Silicone Tool Kitchen Toilet Sink Caulking Shower Seal Filler Sealant Tool
91% match

BlissMart White Silicone Sealant Waterproof Strong White Glue x 2 Tubes Multipurpose Bathroom Silicon Seal Mold Resistant Silicone Tool Kitchen Toilet Sink Caulking Shower Seal Filler Sealant Tool

BLISSMART

£7.96 01 Feb 2026
PandaCoat UniBase MS Fiber (1.2 kg) - Glass Fiber Reinforced sealant - Gutters, Balconies, Concrete, Wood, Plastic - for roof & Caravan Waterproofing - Liquid Plastic, UV-Resistant Fiber sealant
91% match

PandaCoat UniBase MS Fiber (1.2 kg) - Glass Fiber Reinforced sealant - Gutters, Balconies, Concrete, Wood, Plastic - for roof & Caravan Waterproofing - Liquid Plastic, UV-Resistant Fiber sealant

Pandacoat

Out of Stock 08 Feb 2026
Liquid Rubber Universal Waterproof Sealant - Indoor & Outdoor - Concrete, Metal & Wood, Flex Roof Leak & Metal Roof - Cold & Wet Weather - PandaCoat - Made in EU (5KG)
91% match

Liquid Rubber Universal Waterproof Sealant - Indoor & Outdoor - Concrete, Metal & Wood, Flex Roof Leak & Metal Roof - Cold & Wet Weather - PandaCoat - Made in EU (5KG)

Pandacoat

£65.00 05 Feb 2026
All-in-One Hybrid Polymer Sealant & Adhesive - Anti-Mould, Waterproof, Paintable & Fast Curing (IVORY, 290ml)
91% match

All-in-One Hybrid Polymer Sealant & Adhesive - Anti-Mould, Waterproof, Paintable & Fast Curing (IVORY, 290ml)

S4ALL PRO

£5.99 07 Feb 2026
DecorRom Epoxy Putty 340g 2-Part - Repair Cracks, Fill & Sculpt
91% match

DecorRom Epoxy Putty 340g 2-Part - Repair Cracks, Fill & Sculpt

DecorRom

£7.69 06 Feb 2026
Transparent Waterproof Sealant 500g,Invisible Waterproof Anti-Leaking Sealant Agent,Super Strong Anti-Leakage Polyurethane Coating For Bathroom,Roofs,Kitchen,Patio,Walls,Outdoor
91% match

Transparent Waterproof Sealant 500g,Invisible Waterproof Anti-Leaking Sealant Agent,Super Strong Anti-Leakage Polyurethane Coating For Bathroom,Roofs,Kitchen,Patio,Walls,Outdoor

NYBQ

£12.99 05 Feb 2026
Anthracite Grey Construction Sealant & Adhesive All-In-One Hybrid Polymer | Superior to Silicone Sealant | Waterproof, Odourless, Anti-Mould, Paintable | Kitchen Bathroom Outdoor - 300 ml 1 Pack
91% match

Anthracite Grey Construction Sealant & Adhesive All-In-One Hybrid Polymer | Superior to Silicone Sealant | Waterproof, Odourless, Anti-Mould, Paintable | Kitchen Bathroom Outdoor - 300 ml 1 Pack

Hemway

£14.95 30 Jan 2026
Light Grey Construction Sealant & Adhesive All-In-One Hybrid Polymer | Superior to Silicone Sealant | Waterproof, Odourless, Anti-Mould, Paintable | Kitchen Bathroom Outdoor - 300 ml 3 Pack
91% match

Light Grey Construction Sealant & Adhesive All-In-One Hybrid Polymer | Superior to Silicone Sealant | Waterproof, Odourless, Anti-Mould, Paintable | Kitchen Bathroom Outdoor - 300 ml 3 Pack

Hemway

£28.95 01 Feb 2026
Hupeyna Liquid Waterproof Sealant - Invisible Transparent Repairing Leak Adhesive for Indoor and Outdoor Water-Based Coating - 35 Ounces
91% match

Hupeyna Liquid Waterproof Sealant - Invisible Transparent Repairing Leak Adhesive for Indoor and Outdoor Water-Based Coating - 35 Ounces

Hupeyna

£21.99 06 Feb 2026
Epoxy Putty - 8oz / 227g Pool Putty, 2 in 1 Underwater or Above Fast Repair, Fix Leaks, Cracks, Filling, Sculpting - 2 Part Epoxy Sculpt Clay for Metal, Tile, Concrete, Plastic, Ceramics (White)
91% match

Epoxy Putty - 8oz / 227g Pool Putty, 2 in 1 Underwater or Above Fast Repair, Fix Leaks, Cracks, Filling, Sculpting - 2 Part Epoxy Sculpt Clay for Metal, Tile, Concrete, Plastic, Ceramics (White)

DecorRom

£7.99 25 Jan 2026
300g Transparent Waterproof Coating Agent,Invisible Anti-Leakage Bonding Adhesive Sealant for Roofs,Invisible Waterproof Agent,Transparent Insulation Sealant for Outdoor Home Bathroom Toilet
91% match

300g Transparent Waterproof Coating Agent,Invisible Anti-Leakage Bonding Adhesive Sealant for Roofs,Invisible Waterproof Agent,Transparent Insulation Sealant for Outdoor Home Bathroom Toilet

cinqite

£9.99 04 Feb 2026
Tapel Water-Based Liquid Rubber Waterproof Sealant - Black 710ML - Waterproof Rubber Paint Indoor & Outdoor Coating Sealant for Leaks, Cracks & Roof Repair - Easy to Apply
90% match

Tapel Water-Based Liquid Rubber Waterproof Sealant - Black 710ML - Waterproof Rubber Paint Indoor & Outdoor Coating Sealant for Leaks, Cracks & Roof Repair - Easy to Apply

Tapel

Out of Stock 10 Mar 2026
UniBond Outdoor Extreme Repair - Translucent 294g (Pack of 4)
90% match

UniBond Outdoor Extreme Repair - Translucent 294g (Pack of 4)

Unibond

£52.96 07 Feb 2026
Light Grey Kitchen & Bathroom Sealant & Adhesive Hybrid Polymer | Superior to Bathroom Silicone Sealant | Waterproof, Odourless, Anti-Mould | Ideal For Kitchen & Around Bath & Shower - 300 ml 1 Pack
90% match

Light Grey Kitchen & Bathroom Sealant & Adhesive Hybrid Polymer | Superior to Bathroom Silicone Sealant | Waterproof, Odourless, Anti-Mould | Ideal For Kitchen & Around Bath & Shower - 300 ml 1 Pack

Hemway

£14.95 05 Feb 2026
VEVOR Pond Liner, 30 x 35 ft 45 Mil Thickness, Pliable EPDM Material Pond Skins, Easy Cutting Underlayment for Fish or Koi Ponds, Water Features, Waterfall Base, Fountains, Water Gardens, Black
90% match

VEVOR Pond Liner, 30 x 35 ft 45 Mil Thickness, Pliable EPDM Material Pond Skins, Easy Cutting Underlayment for Fish or Koi Ponds, Water Features, Waterfall Base, Fountains, Water Gardens, Black

VEVOR

£843.37 23 Jan 2026
NIUB 1KG Invisible Waterproof Agent - Liquid Transparent Sealant for Indoor & Outdoor Coating, Repairing Leak Adhesive
90% match

NIUB 1KG Invisible Waterproof Agent - Liquid Transparent Sealant for Indoor & Outdoor Coating, Repairing Leak Adhesive

NIUB

£17.85 04 Feb 2026
LUPO Inflatable Puncture Repair Kit | Universal Puncture Repair Glue For Inflatable Pools, Hot Tubs, Boats, Kayaks, Canoes, Air Beds & More | Liquid Rubber Repair Patch | Ultimate Strength PVC Glue
90% match

LUPO Inflatable Puncture Repair Kit | Universal Puncture Repair Glue For Inflatable Pools, Hot Tubs, Boats, Kayaks, Canoes, Air Beds & More | Liquid Rubber Repair Patch | Ultimate Strength PVC Glue

Lupo Global

Out of Stock 29 Jan 2026