Oral lesions (mouth sores) make it painful to eat and talk. Two of the most common recurrent oral lesions are fever blisters (also known as cold sores) and canker sores. Though similar, fever blisters and canker sores have important differences.
You could do a school of White Cloud minnows, they require cooler water, so you wouldn't need a heater. I think if you check the profiles, the ideal temp should be no lower than 67 degrees. Not positive.or example: my goldfish tank is fine in the summer, but my house gets so cold in the winter that I need to have a heater to keep it above 70F. Fish need a constant temperature which is one of the reasons we use heaters.
< Jeep Liberty. *For models with the 45RFE transmissions, the main sump filter needs to be replaced at every service. The spin-on filter will only need to be replaced every 90,000 miles. For models with the 42RLE transmissions, the sump filter will have to be replaced at every service.