The size of the fish tank required for neon tetras mainly depends on the number of fish and the breeding environment. Generally speaking, neon tetras need an aquarium that can hold at least 10 gallons (about 38 liters) of fresh water, so as to provide them with enough space for hiding and swimming. If you plan to keep 6 neon tetras, a 10-gallon aquarium is suitable. If the fish tank is too small, the levels of ammonia and nitrates will be too high, which may cause harm to the fish.
In addition, there are also specific suggestions for the size of the fish tank. It is best that the length of the fish tank reaches 400mm, and the width is more than 300mm. And some landscaping features should be placed in the fish tank to provide a hiding place for the neon tetras and reduce their anxiety.
When setting up the fish tank, the following points can be considered:
Water Quality: Neon tetras prefer warm, soft and slightly acidic fresh water, and the pH value should be between 5 and 6. You can use a reverse osmosis machine to treat tap water to obtain soft water, or use the water from the fish tank to fill the tank.
Filtration System: Placing a corner box filter in the fish tank helps to remove waste and bacteria and keep the water quality clean.
Lighting: Place the fish tank in a dark or dimly lit place, and make sure there is a little light, because neon tetras cannot survive well in complete darkness.
Decoration: Add plants such as Anubias in the fish tank to provide shelters for neon tetras and encourage them to lay eggs.