I wanna glue some anubias to a drift wood, but I'm not sure if this glue is safe, it gives a strong odor when you use it. How long should I let it cure before putting it back in the tank?
Google 'aquarium safe glue for plants.' As I understand it, many adhesives have additives to kill molds that also affect plants (and probably) fish.
9 times out of 10 silicon is too except if it is the anti-mould one, a lot actually say on them believe it or not. There is also a site I believe with all the info on what you can and cant use maybe someone could link it?
The problem is that is says it's a 'Cyanoacrylate adhesive,' not that it doesn't have other ingredients. As far as I know there are no ingredient labeling requirements for adhesives. That's why it's best to find something labeled 'aquarium safe'- you pay more (for less, often), but it means the manufacturer has considered the possible consequences of everything that's been put in it.
Seachem makes a fish safe cyanoacrylate adhesive- Seachem - Flourish Glue Amazon has it- expensive stuff at almost 10 bucks, but your fish probably cost a lot more than that.
Their "fish safe cyanoacrylate adhesive" is probably just the same as any other super glue, with a 900% markup. The only thing you're likely to find in any CA other than cyanoacrylate is viscosity modifiers. Find an inexpensive gel superglue, use it. Find something else to worry about, like cancer, saving for retirement, global warming...