Best glue for tank

Zach136378

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Hi everyone i am starting to get loads of corals now for my tank that means i will need loads of glue and putty. The glues and putty I get never harden and I really need them to especially because I have a shark in the tank. He is only small currently however I feel like I can prevent all of these corals getting knocked over easily with the right glues and putty’s. I currently use seachems glue and d-d putty. Are there any better ones I could use?
 

exnisstech

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I used gorilla glue superglue gel along with JB water weld putty. It holds strong enough I get pieces of broken coral on the bottom from fish running into them but the plugs stay attached. It doesn't get concrete hard and I've been able to pry plugs off with pry tool if needed. I do the same with coral removed from the plug also but I tend to glue plugs down and let coral grow over them.
 

Reeferbadness

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After years of buying the smallish Gorilla Glue gel bottles i finally ponied up for the 10oz BRS super glue large bottle - and it's been going strong for months. With 2 x 200g tanks i have a lot of frags that i harvest and need to glue and this makes the job easy - coupled with epoxy (sandwich method)

Screenshot 2026-04-17 at 7.56.32 AM.png
Screenshot 2026-04-17 at 7.58.55 AM.png
 

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I use Seachems gel glue, amazon gel glue. Whatever is handy.
If it's appropriate I use the Insta-set accelerator.
 
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Zach136378

Zach136378

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Gorilla glue sounds risky. Sadly none of those putty’s are available in the uk from what I checked
 

exnisstech

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Gorilla glue sounds risky. Sadly none of those putty’s are available in the uk from what I checked
Just to clarify I use gorilla glue brand superglue gel not regular gorilla glue. Pretty much any superglue will work with gel being best. I just find the GG brand thicker than some others and it's readily available locally for me.
I've also used the putty @Reeferbadness posted with good results.
 

Gumbies R Us

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Zach136378

Zach136378

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Another problem I have with Seachem glue is that after using like 3 times the glue dries out on the top and it’s impossible to get back off every time I squeeze for the glue it just keeps coming out and then the lid gets sealed shut
 
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Zach136378

Zach136378

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Just to clarify I use gorilla glue brand superglue gel not regular gorilla glue. Pretty much any superglue will work with gel being best. I just find the GG brand thicker than some others and it's readily available locally for me.
I've also used the putty @Reeferbadness posted with good results.
Is it this glue you use??

IMG_2136.jpeg
 

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