Planted Tank Guru
Join Date: Dec 2017
Location: Elk Grove, California
Get the nitrates down-- your tank is severally neglected to get nitrates so high. Because it is, you will need to lower this number ( nitrates) over a period of time to not shock the fish.
Do 25% water changes for the next few days or as long as it takes to bring nitrates down to 20ppm. Vacuum a bit of the gravel each day- sectioning the entirety of the substrate off in quadrants, and cleaning these quadrants well over the next several days.
Evaluate your tank size and amount of fish. Is the bioload of fish too large for bio-filter? Or, is the nitrate level strictly an indication of lack of regular maintenance: water changes, gravel cleanings, regular filter maintenance?
The most common internal bacterial infection that will affect swim bladder in aquarium fish is aeromonus bacteria. This is a secondary bacterial infection that is contracted by the fish primarily in tanks that are not given routine maintenance and care: high nitrates, high dissolved solids, high bacterial load. \
Deal with water quality first. No amount of meds will work if water quality remains the same.
Melafix ( melallucca oil) is for superficial scrapes, fin damage, minor issues. There is nothing in active ingredients to deal with internal issues.
Aeromonus bacteria is gram negative, so need a antibiotic that treats gram-negative bacteria ( and internal bacteria). I would use kanamycin.
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