so i got some bio-spira from a friend who ended up not needing it. its only 2 weeks old, and the exp. date on the package was many months away. so, my question, is has anyone actually put fish in 24 hours later? i want to readd my dwarf fuzzy to my tank asap, but i dont wanna take a chance on killing him.

currently there are 2 ghost shrimp, 2 ancistrius? snails, and 1 scarlet hermit. none show signs of stress.

im going to wait till i get home later tonight to test my water, any ideas on what to expect?