I am a newbie and I have one betta, love him, he is beautiful. I have had him about 3 months now. The temp outside has been chilly lately so I went and got him a small heater for 1-2 gallon tank. He is in 1 1/2 gal. He loved his new heater and would go next to it and he is very happy. Now the last couple days the weather has changed and it got in warm outside and I am afraid it is too hot in his tank, around 80-87 and he does not seem as happy the last too days. Is the water too warm? By the way his name is Finnley. I want to keep him happy and healthy.