Hi everyone, I have a balloonfish molly that keeps having white patchy growths on its fins (see the circled area in the pictures). I thought this was a bacterial infection, so I treated with Kanaplex. However, the growth keeps coming back after treatment, as I already did 2 rounds of medication.
Does anyone know what this disease is and how I should treat it?
Tank specs: 20 gallon long, HOB Aqueon filter and sponge filter, heater, light set for 8 hours per day, started 4/2023
Tankmates: clownfish pleco, panda garra, 2 guppies, neon tetra, aquatic plants
Feeding: feed 1 pinch of micro pellets, freeze-dried tubifex worms, or micro wafers every day, feed small pieces of algae wafer and pleco wafer every other day
Cleaning habits: change around 20% of water (5 gallons) every week with gravel vacuuming
I've also noticed that my tank consistently has dark blue hair algae.
Molly: I got the fish about 3 months ago and quarantined first. It seems to still eat, but I often see it hanging near the bottom of the tank in the day (more active at night).
Water Parameters:
pH: 8.2
Nitrates: between 0-5 ppm
Nitrite: 0 ppm
Ammonia: 0 ppm
Water Temperature: around 80 degrees Fahrenheit