You might do better to ask "is X amount of time under Y conditions" OK.
One of the key things is not to open the bag, as once the bag is opened, the accumulated NH3 will become toxic as the pH rises due to fresh O2 taking the place of CO2.
thanks, this is the story. I am getting an order from SWF tomorrow . I ordered a clam for a friend that will be getting it on Wed. Should I just leave it in the shipping bag ? Should I acclimate it to my tank and take it out Wed. ?