Duong Cung
Koi Lover
Apr 13, 2001, 2:52 AM
Post #1 of 1
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retention time
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HI, this forum have helped me a lot, but I still have on query regarding pond filtration. My question is about retention time. Is it neccessary that the pond water stay in the filter for a certain amount of time before it can be released into the pond? thank you for any replies
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