my firts tank was plastic 4 L tank that had a black moor and comet it had no filter no air pump atached lol i dont use it now because i tryed to clean it with bleach and the sides went milky white lol
my second tank was 17 L got it a week after the 4 L had the same 2 fish with a small aquaone filter that is my back up dont know the name of it
my 3rd tank i got a month later was a Aqua One CR320