Fungus Clear is good. Here are the ingredients:
Nitrofurazone, Furazolidone, Pnotassium Dichromate.
You will need enough for a 8 days. Remember, you have a 55 gallon which is a ton of water to medicate. I suggest you fill less than half your tank so that your dosage will be in 20 gallons, which is two tablets the first day, and 1 tablet a day after that, if you change out your water 50% a day.
Your water filter may have difficulty sucking water when the tank is half full.
Nitrofurazone, Furazolidone, Pnotassium Dichromate.
You will need enough for a 8 days. Remember, you have a 55 gallon which is a ton of water to medicate. I suggest you fill less than half your tank so that your dosage will be in 20 gallons, which is two tablets the first day, and 1 tablet a day after that, if you change out your water 50% a day.
Your water filter may have difficulty sucking water when the tank is half full.