If it is not too late, consider these: 1. dig deeper,

來源: JianFromCA 於 2023-01-08 16:39:20 [] [舊帖] [給我悄悄話] 閱讀數 : (169 bytes)
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another foot would help a lot; 2. place small rocks on the bottom and around, then add cements or whatever.  The deeper it goes, the longer it stands.

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