new betta

Hi, I have a 13l tank unplanted with one Betta. It is heated to 26.5 degrees Celsius, pH 7.1, ammonia 1.0, nitrite 0, Nitrate 0. I had to do a big clean of the tank after only having it for 4 weeks as the live plant that I bought started dying and left a huge mess. The tank has only been...