Does an Alum Dip for New Plants Destroy Beneficial Bacteria?

[Zaffis]

I was curious if beneficial bacteria that might have hitched a ride on your new plants would be destroyed/lost if you choose to do an Alum dip to rid the plants of snails/eggs before bringing them into your aquarium.

 

[Guppysnail]

Yes it will.  Most harmful aquatic things cannot survive 2 weeks to 30 days without a host. Simply quarantining with something like easy green will eliminate those and is not as harmful to the plant. If you are worried about snails those will show up in that time.