Not a very good pic but here's mine
You should get water test kit from the pet shop, I left my tank for 2 weeks and tested it and all the levels were fine. You don't want to add fish before the tank is ok though, as they could just die.
I also have a bulldog/rubbernose plec in my tank, he won't get bigger than 6".
You could have guppies, mollies, platys..
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