I had my 20 gallon divided 3 ways, which was too stressful, so now it's only divided two ways, one giant plakat and one hm dt plakat. It is currently unfiltered as I haven't been able to baffle the filter that came with the tank.
If I keep it unfiltered, how often should I be changing the water? It's heated and I feed them both 6 - 10 pellets a day, divided into morning and night. After 3 or 4 days with 3 fish, I just did about a 60% water change and adjusted the tank for two fish. I used a pump filter. In the future I might just remove the two guys, use the pump filter to remove half of the water and then filter the rest of it. How does that sound to you guys? What is your advice? I occasionally feed them bloodworms as well.
Also, will they eventually stop flaring at one another and chill out? I have notice a few rips in fins, from flaring so much, I'm assuming. They have hiding spots and actually quite large plants along the divider I was hoping would hide them from one another. So far, no such luck.