Newbie aquarium owner here, set up a fifteen gallon aquarium about two weeks ago, added water conditioner,
fake plants and a hideaway, sprinkled some fish food in there and left it running for about two weeks until I put
5 tiger barbs and two dwarf gourami in it two days ago. My filter is an older model that uses a sponge and a bag of
charcoal and my heater keeps the temperature around 26-28. Hopefully I've done everything right so far, what I need to
know next is how often do I change the water and how much do I remove? I have a proper syphon for the water changes.
Also, the only chemicals that I have used so far is the water conditioner that removes cholrine, chloromine and coats and
protects scales, should I be using anything else? Any help would be thoroughly appreciated.