I was just stopping by per usual to HI and see what was up on eBetta. Nice to see you’ve been busy writing. I gotta tell ya, I don’t really agree with yesterday’s article about using filters in a betta tank. A cycled Betta tank with an established ecosystem of nitrifying bacteria is usually superior to an uncycled one. You could certainly use a sponge filter in such a small tank. I also don’t understand why a fish would get sick in a tank with a filter. It’s not the filter that causes sickness, it’s poor water quality. If you add a filter and your fish gets sick, it’s probably because the tank is cycling not because it has a filter. Anyhow, I didn’t come by to spark a filter controversy or anything. Just thought it would be fun to share my thoughts about the subject. I hope you don’t mind. Keep up the writing. BTW, I love the photo from “Can Betta Fish Smell”.