This is not a protozoan infection so do not use the one for velvet/ ich.
Use the medication that treats fungus, finrot and bacteria.
If you can use the smaller tank it means you won't have to treat the main tank and that means you won't be exposing the other fish to chemicals. However, the choice is yours as to which tank you treat him in.
Before you treat the tank, do the following things.
Work out the volume of water in the tank:
measure length x width x height in cm.
divide by 1000.
= volume in litres.
When you measure the height, measure from the top of the substrate to the top of the water level.
There is a calculator/ converter in the "How To Tips" at the top of this page that will let you convert litres to gallons if you need it.
Remove carbon from the filter before treating or it will adsorb the medication and stop it working.
Wipe the inside of the glass down with a clean fish sponge.
Do a 75% water change and gravel clean the substrate. The water changes and gravel cleaning will reduce the number of disease organisms in the water and provide a cleaner environment for the fish to recover in. Make sure any new water is free of chlorine/ chloramine before it is added to the tank.
Clean the filter if it hasn't been done in the last 2 weeks.
Increase surface turbulence/ aeration when using medications because they reduce the dissolved oxygen in the water.
Use the medication that treats fungus, finrot and bacteria.
If you can use the smaller tank it means you won't have to treat the main tank and that means you won't be exposing the other fish to chemicals. However, the choice is yours as to which tank you treat him in.
Before you treat the tank, do the following things.
Work out the volume of water in the tank:
measure length x width x height in cm.
divide by 1000.
= volume in litres.
When you measure the height, measure from the top of the substrate to the top of the water level.
There is a calculator/ converter in the "How To Tips" at the top of this page that will let you convert litres to gallons if you need it.
Remove carbon from the filter before treating or it will adsorb the medication and stop it working.
Wipe the inside of the glass down with a clean fish sponge.
Do a 75% water change and gravel clean the substrate. The water changes and gravel cleaning will reduce the number of disease organisms in the water and provide a cleaner environment for the fish to recover in. Make sure any new water is free of chlorine/ chloramine before it is added to the tank.
Clean the filter if it hasn't been done in the last 2 weeks.
Increase surface turbulence/ aeration when using medications because they reduce the dissolved oxygen in the water.