It depends on what type of fish I got myself.
If they are hardy fishes like Polypterus, snakeheads, etc, I just throw them in.
If they are tricky fishes, then have to acclimatize.
Just dump the whole bag into the tank with water and wait for it to reach the temperature of the tank. Then pour some water in. And wait. And pour again, and wait. And so on. Then pour everything into the tank.
Some people don't recommend pouring everything into the tank because the water from the LFS might be contaminated with some disease. But I don't usually care. The water from my LFS is quite ok so far. No problem with them.
If they are hardy fishes like Polypterus, snakeheads, etc, I just throw them in.
If they are tricky fishes, then have to acclimatize.
Just dump the whole bag into the tank with water and wait for it to reach the temperature of the tank. Then pour some water in. And wait. And pour again, and wait. And so on. Then pour everything into the tank.
Some people don't recommend pouring everything into the tank because the water from the LFS might be contaminated with some disease. But I don't usually care. The water from my LFS is quite ok so far. No problem with them.