I wonder if you lads that are having fermenting growth problems are haveing the same problems that new homebrewers have. By not sterilizing your equipment before starting. In homebrewing, they recommend washing and soaking all equipment with a 1/4 cup chlorine bleach per gal. water, allowing a least 2 min contact to all surfaces. Then rinse or allow to air dry until all trace oders of chlorine are gone. Yeast and fungal infections are easy to get. Remember you can not use Vagisel to cure yeast problems in food or beer. Byron