Bill, pretty neat stuff and an innovative company. I understand it better now. The holes in the side allow both air movement and photosynthesis.
The only downside that I can see is insects getting into the tube and not knowing that they are there.
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP
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