| July 26 |
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The drainage method of the pond of the school biotope is an Overflow type. We do the second sludge cleaning this time. |
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It was a strategy to let this strategy created a disturbance at the water of the pond, and sludge overflow with water.It looks like this creates a disturbance and makes a flow of the water. |
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It is a place for the place among the leaves of the lotus in the center
of the photograph to overflow. We let a current face one point together. |
| July 28 |
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It is the part of the pond after the second sludge cleaning. We had the
parts which sludge disappeared, and showed a bottom. |
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The photograph which we took toward the bottom of the pond.A bottom became
shallow and came to see a stone. |
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This is the general view of the present pond. Do you understand that a pond became beautiful? |
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