5 month Expired STS still worked. How long can it actually keep?

  • Thread starter MikeParent
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MikeParent

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My plant is loaded with male flowers but I’m curious how long others have kept STS viable.
5 month expired sts still worked how long can it actually keep
 
Smokey0418

Smokey0418

624
143
I am working with bottle I mixed in April 2022.
And I think what I see coming is good.
 
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