I had a tank a about 5 years ago, and I have just recently re-set it up, The filter is a Whisper® Advanced Power Filter, and the heater is a Top Fin brand heater.
research about tanks and fish types before you buy
1 adult Sunburst tetra, 7 4 month old sunburst tetras, 1 5 week old golden molly, a gold inca snail, 4 neon tetras, 1 male swordtail
fake plants, and one bunch of Gold Ribbon (live plant) and one bunch of Wisteria(live plant)
During the summer months, it may become more of a challenge to keep your aquarium temperature stable.
There are many different species of barbs but some of them are better than others for the larger home aquarium.
Cultivating a thriving saltwater tank can be a challenge but it is also incredibly rewarding.