How to make your Betta angry: put a clear divider down the middle of his 6.6 gallon tank! He has had the run of the place for two weeks all by himself, and I made an acrylic divider today for future use. I put it in the tank tonight to test it and make sure it fit correctly. Wow - did he get mad fast! He head butted it for about 30 seconds, then swam straight to the front of the tank, looked me dead in the eyes, and gave me his best pissy flare!
I plan to use the divider when I introduce Cherry Shrimp in a few weeks. Want him to get used to them before I test to see if he will tolerate them or digest them.
In the meantime, I removed the divider to give Spike back his full tank so that he does not hurt me.
Based on my experience the more ammonia you "cycle" the tank with - ( in other words, the higher volume that the filter media is able to process in a given time frame), then the more fish you have prepared for. I don't know any specifics about how much ammonia one fish typically puts out, assuming the standard 2 inch narrow body. So I cannot link X ammonia processed to being ready for Y inches of fish.
But in my case I was processing 3-4 ppm of ammonia in 12 hours, which I assumed was WAY more than I needed to stock one Betta. That was the volume I processed for my 26 gallon tank when I initially stocked with 12 fish a few years ago.
But a new tank can also be prone to fluctuations...mini-cycles...that make stocking a lot of fish more risky. It's a trade off between dealing with "new tank syndrome" and stocking up to the level of ammonia you are cycling. It's up to the individual in my opinion.
Lovely tank. The betta is beautiful and it's great to see Dr Tim's bacterial cycle log recorded with success. The only negative thing I would mention is that the betta might eat the cherry shrimp early or later and definately the babies so you can't really breed them in this tank.
I have read differing results regarding betta with cherries, but I may just rehome the betta into my main community tank if it looks like he will not tolerate cherries.