Goblin and my ghost shrimp are getting along fabulously. But I'm going away for 6/7 days for spring break in a couple weeks. I'm taking Goblin with me in a temporary tank/bowl/I'm not sure what I'm buying yet. But I'm worried about the shrimp, since I can't take them as well. Could I just leave them in the tank (it will stay filtered and running while I'm away) and throw in a wafer(s) or will they be good for a week?