IME Always when adding a new fish to the tank and weekly as prevention i dose the tank with Melafix, it's all natural and will not hurt either the plants or fish (even if overdose).
For new additions i treat for 3 days, and i've never had an ick outbreak since. Once every week with water change.
For new additions i treat for 3 days, and i've never had an ick outbreak since. Once every week with water change.