Water tank biotope 2

July 16    We had killifish and prawns in school biotope.
  We put biology of the pond in a water tank together with water.  Because we were cautious that shrimps jumped and did not fall, we had a hard time.
July 19  We saw it after an interval of three days. The water was transparent. The quantity of water was good.
 The killifish which we put inside swim lively. We gave food to them, they ate up soon.
 Would you understand it? The root of the plant grows to a gravel part of the water tank.  Three plants which we gathered colonized.
August 22 Because the water of tank decreased, we added water.
December 27  This is a movie of the water tank biotope. The outside is cold, but the killifish swim well.

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