Hi all....first - love all the pictures of your Bettas! Amazing looking fish.
So, I have to admit that I was not happy when our Betta arrived at our house with the 1.66 gal. tank. This means Mom has to clean and take care of! But, I am getting into it!
Like I said, we have a 1.66 gal tank, with a small Betta. The tank does have a air pump - no filter and NO HEATER. Can someone recommend a heater that can regulate such a small tank - and not melt the acrylic? Looking for a really small one, I guess.
Also, what the heck is a bubble nest

?
Thanks so much!