I ordered 150 yamato shrimps, 100 of which were pre-ordered by a customer. After 2 days in quarantine the customer picked them up. I oxygenated the bags for transport, & the next day he lost 90 of them. The other 50 which were transferred to show tanks in the store showed no problems. A water test of the customers water showed perimeters similar to the water they were shipped in. Can oxygenating the bags have caused the losses?