Just a quick update on my bubble bowl.
Originally I was trying to just run this bowl as low tech as possible, no filter, no heater, only some artificial light source. Here's a picture of the bowl 2 months in. This bowl obviously survived my winter break for 2 weeks without water changes. The fish in my bowl were fed by Eheim auto feeder and they survived!
Then I had a super busy period with my work and barely had any time to sleep. I got lazy and started to change water once every 2 weeks. My bowl obviously had not yet recovered from my 2 weeks of absence and it took a hit. My ludwigias were all gone and I also cultivated the so called green water.
Then as a reward to my busy work, I went on another 1 week break. My bowl was just looking miserable upon my arrival, although all my fish were still doing fine. I finally gave in and plugged in a filter.
After running the filter and having regular water changes for just 2-3 weeks, here's the final look. I added some java ferns and water sprite from my other tanks. They are doing well. I also recently added 2 corydoras. They are pretty happy with the bowl too. I'm not worried about water quality as much now, since I have a filter that's good for up to 10 gallons for this little bowl and I added a decent amount of fluval biomax in there.
Please excuse the poor picture quality. I will take some nicer pictures once the plants grow in a little more.
Let me know if you have any questions or comments. Will keep this thread updated!