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My jar has not changed to much. When we first started I left the lid on to tight and it started to off gas causing the jar lid to expand. Whoops. Other then that there is a bit of black and white looking fungus. The jar itself hasn't overall changed as much as I thought it was going to.

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There is a lot of light brown and maybe some purple making appearances. Also, there is what appears to be a layer of green in the middle of the column. There is a very strong sulfur smell as soon as I remove the lid from the jar. Since the jar is in a south-facing window, the organisms have gotten a lot of light, but it does not reach very deep at all.

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I'm not observing any colored bacteria yet, which suggests that I may not have as much light exposure as I thought I would. I do appear to have a seemingly random distribution of darker patches, which may be sulfate-reducing bacteria.

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I've noticed quite a few changes in my jar. Even though I keep my jar in a window full of moderate sunlight, half of the bottom mud turned black. This sulfate-reducing bacteria could be present because my jar isn't getting enough sunlight. There's also a thin residue growing on the top of the water. It could possibly be heterotrophic bacteria.

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Biology Winogradsky Lab Picture 2-Naomi Garber-Mclimore

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I noticed some changed in the water. Foam is going on top of the water.

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I noticed that there is some green bacteria growing around the top of the jar as well as some dark red bacteria at the top. The dirt is still pretty black so I predict that there is a lot sulfate reducing bacteria present.

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Even though I have been trying to keep my column in the lit area at all times, due to my apartment having bad lighting my column has and abundance of sulfate reducing bacteria because of all the dark black spots but the column has an abundance of colorless sulfur bacteria because of all the white spots. So far these are the only two bacteria I can see growing in my column so far but I'll try to keep the same conditions as before.

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Although it is a bit difficult to see in the dark with flash, many cyanobacteria have been growing in the top water layer of my column (along with what might be some kind of green algae). When the column is in direct sunlight, I can see a significant increase in the number of surface bubbles forming (which I imagine are pockets of oxygen gas created by photosynthesis). Interestingly, there also seems to be either some kind of fungus, or more likely an oomycete, growing on a bit of mud on the side of the column above the water. The rest of the column is still largely black, so I think this is mainly a community of sulfate reducers (the smell seems to indicate that as well.)

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I didn’t have much diversity in mine-almost my whole jar turned black so I think I mainly have sulfate-reducing bacteria. There is a whitish film where the water meets the top of the mud that I think is colorless sulfur bacteria. There where some green cyanobacteria on top at the beginning but they all seem to have died. There is an orange film on top that could be from Iron-oxidizing bacteria. There is a bit of a smell from the sulfate reducers.

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I haven't really noticed that much change happening in my column besides these little pockets where bacteria is forming.

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My column is getting a ton of little air pockets with little organisms within the dirt. There are also green spots forming near the top of the dirt. The water has turned more of a yellow/tan color.

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I noticed a lot of darker green bacteria growing around the sides of the jar and the top of the mud. I also noticed this new observation that I hadn't noticed till I took a picture of the jar with the flash on. There is discoloration in the mud, the middle is a lot dark then the top and the bottom. Looks pretty cool though!

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Observations that I notice in my column is that I now have a copper like color bacteria surrounding on the edge and the surface of my jar which is growing alongside of the branch. Before the branch was a strong, stiff branch and it looks more wilted in my column.