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.
5. Thatâs it. Now return the sponge or pad to the filter and return the filter to your fish tank. Pour any remaining water from your cleaning project inside it, if it isnât crawling with gunk, that is, and turn the filter back on.. Siphon or scoop out some water. You will need about two cups of water from the tank to use to clean the filterâs sponge. For the benefit of your fish, you will want to use existing tank water, not tap water or distilled water.