Thursday, November 12, 2015

Week 7

Day 7

We observed that there are more little sprouts coming up through the soil. The largest sprout seems to have grown even larger and is still wilted. There is still mold on the surface of the soil, however it does not appear to have grown larger.  
There is one sprout that seams to be growing vertically and looks a lot taller than last week.
The snail that we marked last week has moved. We can see two out three of our snails.
There is still a lot of condensation throughout the terrarium, especially on the top tier. 

The water is still at the same level as the week of 10/15.
The water is pretty clear with just some particles. 
The elodea has grown more and is still very green.

  • The water clarity appears more clear than past weeks
  • The elodea has continued to grow and circle around the bottom tier of the terrarium
  • The snails have moved since last week, and we can see two snails
  • Two of our sprouts have grown quite tall and the smaller sprouths have grown in height also
  • There is a large amount of condensation on both tiers of the terrarium
  • Overall, we have observed a lot of changing conditions in our terrarium. Although during the first few weeks of our terrarium project, we observed a lack of growth, after we added more water to our terrarium we observed rapid growth in our plants, and gradual clarity of our water. 

Thursday, November 5, 2015

Week 6

Our elodea has grown a lot in length during this past week!
It has grown so long that it appears to be circling the inside of the bottom tier. 
There is a lot of condensation throughout the terrarium

There are several new sprouts this week, and we observed that the largest sprout looks a little wilted 


  • The water level is at the same level as measured on 10/15
  • We observed a few new sprouts growing this week
  • We noticed that one of the plant is a little wilted, but that sprout appears to have new growth
  • We observed that there is still mold on the soil
  • The elodea is very green, and has wrapped around the bottom of the ecosystem about 2 1/2 times.
  • We only observed one snail. We have inferred that the two other snails are below the rocks. 
Additional wonderings:
- I wonder if the two snails below the rocks are still living?
-I am curious what has caused the mold in our terrarium? I noticed that the mold appeared the week after we added water, so I am inferring that adding more water to our terrarium is somehow related to the growth of the mold.