I also do water changes with a Python directly into the tank.
Suck the water out.
Pump new water back in from the tap.
Drizzle in the treatment while it's filling up.
Some stress coat with a big water change.
Never had a problem.
However with smaller "tropical" (right term?) fish I premix the water before putting it in the tank.
Suck the water out.
Pump new water back in from the tap.
Drizzle in the treatment while it's filling up.
Some stress coat with a big water change.
Never had a problem.
However with smaller "tropical" (right term?) fish I premix the water before putting it in the tank.
