Tipid tubig tips, alamin! (Alternate wetting and drying/paggawa ng observation well)

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• Tipid tubig tips, alamin! - Part 9
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• Tipid tubig tips, alamin! - Part 8
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• Tipid tubig tips, alamin! - Part 7
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• Tipid tubig tips, alamin! - Part 6
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• Tipid tubig tips, alamin! - Part 5
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• Tipid tubig tips, alamin! - Part 4A
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• Tipid tubig tips, alamin! - Part 4
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• Tipid tubig tips, alamin! - Part 3A
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• Tipid tubig tips, alamin! - Part 3
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• Tipid tubig tips, alamin! - Part 2
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• Tipid tubig tips, alamin! - Part 1
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