Formalin mix time

[Wildreefs]

hownling is formalin good for in baths?

If I do a 35 minute dip on two fish, can I remove fish to qt then dip another in that bath? At that point, the formalin is no more than two hours old from first being mixed.

Thanks

 

[EmdeReef]

From an effectiveness standpoint you can reuse, my concern would be oxygen depletion.