

🌊 Stick with the best — reef glue that works as hard as you do!
Seachem Reef Glue is a professional-grade cyanoacrylate gel designed for rapid, durable coral frag mounting. Its 17x thicker formula provides precise application with minimal mess, bonding securely underwater in both salt and freshwater environments. Packaged in an aluminum tube to prevent drying, it’s the trusted choice for reef keepers seeking reliable, long-lasting adhesion.
| Brand | Seachem |
| Color | No Color |
| Customer Reviews | 4.4 out of 5 stars 2,114 Reviews |
| Item Form | Gel |
| Item Package Quantity | 1 |
| Material | Plastic |
| Specific Uses For Product | Active |
S**H
Easy peasy
This Seachem Reef Glue has become my go-to for mounting coral frags. The gel consistency is perfect — not runny like cheap super glue, and it gives you a few seconds of working time before setting. It bonds quickly underwater and holds strong, even with heavier frags or odd-shaped pieces. I’ve used it on both live rock and frag plugs, and it sets firm without clouding the water or irritating corals. The squeeze tube design makes it easy to control how much you apply, and it seals well so the tip doesn’t clog up between uses. Pro tip: dry the frag base and rock spot with a paper towel before applying for the best bond, and use a small dab at a time — a little goes a long way. Great product for any reef keeper who wants a reliable glue that actually works underwater.
R**Z
It works.
Works very fast and underwater. I glued my soft coral to a live rock and held it together for almost 15 seconds and it was good to go. That was a couple weeks already and it’s still holding strong in my saltwater tank.
J**Y
Excellent aquarium glue
This glue is a must have if you are setting up or maintaining a salt water coral tank. It is quick drying and a long lasting glue. With that being said it is also easy to remove if you need to rearrange coral in your tank. The only issue is that after using the glue you have to take a pin or needle and clean the nozzle out if you want to continue to use the nozzle otherwise the left over glue from dispensing dries and leaves the nozzle clogged. This is just an extra step but overall the best glue I've used.
K**K
Good Product
Product holds up well and seems to grip coral quickly when you glue it. Do need to put cap on as sometimes the glue just keep coming out and can get the cap glued on and hard to get off. I store mine with the cap upwards to keep the cap from being stuck. Glue does dry white-ish so you can see it but not too terribly. Though keep tabs of your fingers as if you get it on your fingers it can dry and be quite the annoying struggle to get off.
U**9
The Best Coral Glue
This frag glue is a great and durable product, I highly recommend it if you are new to reef tanks or an experienced reefer. The glue is an excellent value for the money, has quick dry times and an almost invisible appearance. While the instructions say you can use the glue underwater, I would recommend doing all the gluing on the frag plug before submerging it. The glue hardens at a decent pace and is very strong, however it would take a large amount to safely secure live rock, so I would look for a different solution for rockscaping. This larger size of glue works much better than trying to use super glue tubes, this is the glue you're looking for. Pro's: +Good Quality +Hardens Clear +Perfect for Coral Con's -Not for Rockscaping
D**R
Great!
Great product! Its my 2nd time ordering.
M**H
Easier to apply but weaker than others
I gave this glue 3 stars because while it IS easier to apply than typical super glue (due to its Elmers glue-like consistency) it has a less reliable initial bond and overall seems weaker than typical cryanoacrylate. Whatever process Seachem used to make this glue so thick seems to have diluted it in the process. I used this glue to bond two pieces of driftwood for a freshwater tank and it was an incredibly messy and frustrating experience after having to re-apply so many times. I even tried the hobbyist trick of putting tissue paper or a cotton ball in between the pieces and saturating it with the glue but couldn’t because the glue is too thick. If you’ve never tried that before, try saturating a piece of toilet paper or cotton ball with super glue and it will start to smoke due to a chemical reaction. This is a great way to bond odd-shaped hard scape pieces together, however as mentioned it can’t be done with this glue due to it’s thick consistency. Ultimately the glue did work after a while but for my next project I’ll likely try a different glue.
J**N
Sets quick
Works really well. It starts bonding quick. Think super glue and avoid skin and clothes. If glueing corals or frags if you can hold it in place for about 3 minutes youll probably be good to go just have the particulars worked out before you start. The clock ticks really fast once you have it all in place. 10 minutes hard as a stone.
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1 month ago
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