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MyPond MS300 Clear Sealant 300ml - Professional Marine Grade Pond & Aquarium Sealant
MyPond MS300 Clear Sealant 300ml - Professional Marine Grade Pond & Aquarium Sealant
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£16.99 GBP
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£16.99 GBP
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J
John Great product
C
Claire Fixed my water feature
D
Derek As advertised
N
Nizy Excellent sealant
S
Swifty This is my second tube of this super sticky sealant which I have used to convert concrete garden flower bed bowls to water features with small solar fountains. I've cut a plastic disc and fixed to the base of my two garden bowls - so the sealant is always underwater. Could not find anything else that could do it but this has worked perfectly.
MyPond MS300 – All Purpose Clear Pond Sealant (300ml)
The Ultimate Pond Sealant for Professional & DIY Pond Builders
MyPond MS300 is the UK’s leading all-purpose pond sealant – trusted by pond professionals and hobbyists alike. Specially formulated for fish ponds, koi ponds, water features, and aquariums, this flexible, high-strength sealant delivers long-lasting, watertight results where ordinary silicone fails.
Key Features
- Fish Safe & Aquatic Safe: 100% non-toxic once cured, ideal for all pond life
- Cures Underwater: Bonds and seals even when wet, perfect for emergency repairs
- Bonds Pond Liners: Works on EPDM, Butyl, PVC (not laminated tarps)
- Perfect for Pond Window Installation: Achieve clear, strong, leak-free viewing windows
- Bottom Drain & Pipe Sealing: Reliable for drains, inlets, and plumbing joints
- 4x Stronger Than Silicone: Superior adhesion and flexibility for demanding pond projects
- Multi-Surface Bonding: Concrete, stone, wood, glass, metal, rubber, plastic, fibreglass
- No Primer Needed: (Except on concrete – must be clean, dry, and primed)
- Weatherproof & UV Resistant: Long-lasting seal in all UK conditions
Why Choose MyPond MS300?
- High Performance: Modified silyl polyether base polymer for maximum durability
- No Odour or Shrinkage: Zero formaldehyde, environmentally friendly, remains flexible after curing
- Easy Application: Skins in 24 hours, full cure in thicker beads takes longer (remains flexible at core)
- Professional Results: Used by leading pond installers across the UK
Application Tips
- Apply to clean, dry surfaces
- For best results, use a single large bead (minimum 2mm thick)
- Supports curing underwater but requires support during cure
- Avoid prolonged skin contact; rinse eyes with water if exposed
Trusted by Pond Experts Nationwide
Thousands of UK pond builders rely on MyPond MS300 for leak-free, crystal-clear results. Order your 300ml black MS300 cartridge today for fast, secure delivery.
MyPond UK
Unit 5 High Carr Network Centre, Newcastle Under Lyme, ST5 7XE
01270 295992
Unit 5 High Carr Network Centre, Newcastle Under Lyme, ST5 7XE
01270 295992
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