Author | Comment | Last activity | Moderation | ||
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martenskram | "I hate to be pessimistic, but even a medium efficiency supply air filter is probably more effective in removing the dangerous particles (respirable..." | Read more » | almost 9 years ago | |||
martenskram | "Thank you for sharing this very nice project! In a comparable climate zone in southern Sweden we must have more earthworms (eating the dead leaves)..." | Read more » | almost 9 years ago |