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.
1 Let them soak: Allow the filters to soak for 10 minutes. 2  Scrub the filters: After soaking, take a non-abrasive scrub brush and scrub the filters. 3  Add more dish soap to your brush if required while you scrub. 4  Rinse and dry: Rinse the filters thoroughly in hot water and dry with a paper towel or clean cloth. Swish around with a brush (not your hand because it's too hot!) until the water is nice and soapy. 2  Put greasy filters in water: Submerge your greasy exhaust fan filters into the water. 3  Make sure they're completely covered. 4  Let them soak: Allow the filters to soak for 10 minutes.