Reef Weld – Underwater Coral Adhesive (4.5oz)
Key Features
- 100% reef safe
- 4.5oz Size
- Purple coralline algae colored
- Super easy to mold by hand
Directions:
- Gloves highly recommended
- Knead until color consistently mix
- Use like putty to connect corals to rocks
- Use wet underwater or dry outside of the water
| Specification | Value |
|---|---|
| Product Type | Underwater Coral Adhesive |
| Size | 4.5oz |
| Color | Purple coralline algae |
| Usage | Connect corals to rocks; usable underwater or outdoors |
FAQ
Can this adhesive be used in saltwater environments?
Yes, it can be used wet underwater to connect corals to rocks.
Is the adhesive safe for marine ecosystems?
Yes, it is 100% reef safe and does not harm marine life.
How do I prepare the adhesive before use?
Knead the adhesive until the color mixes consistently. Gloves are recommended for protection.

Julia Berry –
Works perfectly for attaching small corals to rocks. Easy to shape and stays firm underwater. No fish or coral damage observed after several months of use.
Theresa Grant –
The purple color matches the natural coral tones well. It holds well in both wet and dry conditions. A bit sticky when first applied, but settles into a smooth putty after kneading.
Neil Ball –
Used it in a new reef tank setup. It bonded the corals securely without any leaks or movement. Very satisfied with the performance and safety.