Well they are always on the oposite side of the tank. The last time I known my temp is around 76 degrees. I did a water change and I am waiting to check the nitrates.
What about ammonia?
Don't know about the cloudy eyes. And he could possibly be stressed about the tetras even if they are on the other side. You never know with bettas, they are such little individuals.
Yeah I cant test ammonia becasue the test strips only come with the above(first post). I think on him flaring its because he is more settled into the tank and his color is more defined and he is happy. I just noticed that his eyes are normal. I did a 30% wc today because of my Nitrates so maybe he was just adgetated(spl) with that. But I will definitely get a thermometer within the next month and an ammonia test kit.