Hi everyone, today I bought a bottle of phytoplankton and the smell was odd. I have been feeding with DT'S for some time now, normally I buy the 15oz bottle but today bought the large bottle. The date on it is 12/15/04. The smell is not overpowering as the bottle says it would be (if it was dead), it smells like sulfur ( bad eggs), however it is not extremely strong. Would the larger bottle smell differant than the smaller? I do not want to feed with dead plankton. Thanks for any input you might have