I would also get some water conditioner to remove chlorine & chloramine just in case there is any in the water. I know you said there is none in your water but I would add some any way. Dechlorinators will not hurt the fish but chlorine/ chloramine will.
If you are unsure about which filter or dechlorinator to get, write down what brands are at the pet shop and post them here. We can advise you on which is better.
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If you can't find a decent pump or filter, then see if they have any aquarium plants in pots, or floating plants. The plants will use ammonia in the water and help keep it cleaner.
Some good floating plants include Duckweed, Azolla, Salvinnia and Water Sprite.
Some good plants to have growing in pots include Vallis, Ambulia, Hygrophilla polysperma, Ludwigia or Amazon Swordplants.
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If you do get live plants, they will need some light so you will need to put the aquarium where it gets some light but doesn't get too hot. or you can put a desk lamp or some other sort of light above the tank. But a filter, aeration (bubbles or surface turbulence) and lots of clean water is the most important thing for fish keeping.
If you are unsure about which filter or dechlorinator to get, write down what brands are at the pet shop and post them here. We can advise you on which is better.
-------------------
If you can't find a decent pump or filter, then see if they have any aquarium plants in pots, or floating plants. The plants will use ammonia in the water and help keep it cleaner.
Some good floating plants include Duckweed, Azolla, Salvinnia and Water Sprite.
Some good plants to have growing in pots include Vallis, Ambulia, Hygrophilla polysperma, Ludwigia or Amazon Swordplants.
---------------------
If you do get live plants, they will need some light so you will need to put the aquarium where it gets some light but doesn't get too hot. or you can put a desk lamp or some other sort of light above the tank. But a filter, aeration (bubbles or surface turbulence) and lots of clean water is the most important thing for fish keeping.