How To Take Care Of A New Fish Tank. Introduce a few small hardy fish such as danios or livebearers. Make sure the aquarium size is appropriate for the fish species chosen.
7232007 Install your heater. It takes daily fish care and set up a good tank maintenance schedule. Over time the beneficial bacteria should kick in and balance the chemistry in the aquarium.
Wait at least a week between new fish additions.
7232007 Install your heater. However some fish like goldfish are cold water fish and need lower temperatures. This will make the existing fish less aggressive. The number of fish will depend on the size of the aquarium.