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Old January 4, 2018   #16
Join Date: Nov 2011
Location: Omaha Zone 5
Posts: 2,291

I sometimes get stuff growing on top when I don't have enough airflow, but mine was much more extensive, running around and down the side of the cup. I must have packed too tightly. Yuck.
Glad it works for some as the cost is great and you never run short. - Lisa
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