1. Always use a new or clean bucket when going through the acclimation or water changing process.† A bucket that has been used to hold bleach or other chemicals can be very harmful for the fish in your aquarium.
2. It is not a good idea to wash your filter media with regular tap water.† The tap water can kill the beneficial bacteria that is built up in the filter.† Use distilled water to clean out your filter and its components.
3. When keeping aggressive species of fish, it is best not to introduce peaceful species of fish among them.† Aggressive fish will tend to bully the more peaceful fish.† Make sure to thoroughly read about the compatibility of the selected fish for the aquarium.