do you know if Seachem Clarify expires?

[bela]

I have got a bottle that I was thinking about using, but who knows for how long it has been opened and I do not want to kill anything in the tank.

Can I?

 

Thanks

 

[Guppysnail]

If you go to their website they have a tech support phone number and I believe a message support feature. They are very helpful in answering questions. 

[nabokovfan87]

Mine is pretty old. I still use it. I'm talking close to 8 or so years old? I can try to find a date on the bottle.

I would say is loses some effectiveness because that just what chemicals do that are stored in plastic bottles over time, but it shouldn't cause any issues and should work for the most part.