Seachem Reef Glue 20g
Cyanoacrylate gel adhesive intended for securing coral frags and reef-aquarium hardscape.
Quick Facts
- Product type: Aquascaping or maintenance tool
- Listed size / rating: 20g
- Selected option: Check the chosen variant before ordering.
- Primary use: Aquascaping or maintenance tool
Is this for you?
Perfect if:
- The tool shape and reach match the task.
- Its dimensions suit the aquarium.
- You can clean and dry it after use.
- A different tip, angle or length is required.
- The task requires a different tool.
Consider something else if:
| Feature | Detail |
|---|---|
| Product Type | Aquascaping or maintenance tool |
| Size | 20g |
| Primary Use | Securing coral frags and hardscape in reef aquariums |
FAQ
Can this glue be used on all types of coral?
This glue is specifically designed for coral frags and hardscape in reef aquariums. It is not recommended for use on live coral polyps or sensitive species without prior testing.
How long does the glue take to set?
The glue sets within minutes under normal aquarium conditions. It provides a strong bond suitable for reef hardscape and coral attachment.
Is the glue safe for marine life after curing?
Yes, once fully cured, the glue is non-toxic and safe for marine life in reef aquariums.

Warren Metcalfe –
Used this glue to attach a new coral fragment to the rock wall. It bonded well and didn’t drip. Easy to apply and cleaned up quickly after use. Works perfectly for small reef setups.
Justin Butler –
Good for securing small pieces of hardscape. Set quickly and held firm. A bit messy during application, but manageable with gloves. Would recommend for beginners in reef aquariums.
Lisa Murray –
Perfect for attaching coral frags without damaging the polyps. The 20g size is enough for a small tank. Dries clear and doesn’t cloud the water.
Carolyn Paige –
Works as expected but requires careful handling. Took a few minutes to set. Not ideal for large pieces or thick coral, but good for small attachments.