Gold Label Underwater Sealer - Black - 80ml
Best current price£12.39from www.pond-planet.co.uk
Best offers
Shopping.co.uk recommended and popular offers
www.pond-planet.co.uk£12.39Visit shop Gold Label Black Underwater Sealer
Visit shopwww.pond-planet.co.uk£12.39Visit shop All Offers
2 offers from £12.39 - £18.50
View price history by clicking the chart icon.
Maidenhead AquaticsGold Label Black Pond and Aquarium Sealer 80ml
Free delivery in 1–3 days
£18.50
Visit shop
Product Information
Full details
Gold Label Underwater Sealer is an essential maintenance solution for pond and aquarium enthusiasts who need to repair leaks or secure fixtures without the inconvenience of draining their aquatic environments. Designed to provide a rock-solid, waterproof bond in fully submerged conditions, this product is safe for fish and aquatic life; however, users should note that it is not compatible with specific plastics like Polyex, HDPE, or LDPE, and requires ambient temperatures above 10°C for proper application.
All features
| Colour | Black |
|---|---|
| Model Part Number | GLB80 |
| Brand | Maidenhead Aquatics |
Extended Product Information
FAQs
Is Gold Label Underwater Sealer safe for my koi?
Yes, it is completely safe for fish and all types of aquatic life once applied.
Can I use this on a drinking water tank?
The product is designed for pond and aquarium use. It is not recommended for potable water storage.
Do I need to turn off my pond pump?
It is recommended to turn off pumps or filters near the repair site for the first few hours to ensure the sealant gains initial tack without being disturbed by water current.
How long does it take to paint over the sealant?
You can paint over the sealant once it has reached its initial tack stage, which is typically after 4 hours.
Can I use this to repair a garden hose?
No, this product is not intended for high-pressure hose repair and is not compatible with common hose plastics like LDPE.
What happens if the temperature drops below 10°C?
The curing process will be severely hampered or stop. Do not attempt repairs in cold weather conditions.
Troubleshooting
Sealant is not sticking to the surface
The surface likely has a layer of algae or grease. Scrub the area clean and ensure it is free of debris before reapplying.
Sealant remains soft after 24 hours
Check the ambient temperature; if it is below 10°C, the chemical cure will be delayed or may fail entirely.
Leak persists after repair
Ensure the bead thickness is at least 2mm and that the sealant was applied evenly across the entire length of the gap.
Pros and Cons
Pros
- No need to drain pond or aquarium
- Safe for fish and aquatic plants
- Versatile adhesion across multiple materials
- Can be painted over after 4 hours
- Professional-grade waterproof finish
Cons
- Cannot be used in temperatures below 10°C
- Not compatible with Polyex, HDPE, or LDPE plastics
- Requires a clean, grease-free surface for best results
- 24-hour wait time for full structural cure
Setup, Compatibility & Care
Before application, ensure the surface is thoroughly cleaned to allow the sealant to bond effectively. While the product is highly versatile, it is critical to avoid using it on Polyex, HDPE, or LDPE plastics as the material will not cure properly. The product is designed for ambient temperatures above 10°C; applying it in colder weather will significantly compromise the curing process. Always store the tube in a cool, dry place and ensure the cap is replaced tightly after use to prevent the sealant from drying inside the nozzle.