You can use a tissue to adsorb it. The water surface of the tank is exposed to the air, so sometimes there will be oil film on it. The film will influence the oxygen content of the water. It is also recommended that you do not use mineral water to breed fish, especially for raising the paracheirodon innesi. This kind of fish like to live in the faintly?acid soft waterwith the temperature of 22-24 degrees, pH value of 6.4-6.8 and hardness of 4-8.
There are several ways to remove oil film. 1 For those who keep small-sized fishes, they can bought several black molly. This kind of fish like to look for food on the surface of the water and they will eat the this layer of oil film! 2 You can establish nitrification system and the oil film will disappear. However, this method takes longer time. 3 There is a stale fish oil film removal on the market. This device can also remove the oil film, but you need to spend money!!! 4 The most effective, simplest and most economical way is to use a 1.25 liter coke bottle! The first step: Cutting out a reversed isosceles triangle with the side length of 2cm at the four fifths part of the coke bottle. The second step: Sinking the bottle down in the water and letting the floating oil flow slowly to the bottle when the bottle sinks to the triangle. Draining the bottle whe it is nearly full and then going on with the method! The oil film on the fish tank can be removed in this way. If it is a small tank, you only should try the method once while you should it two to three if it is a bigger tank.
1 You can use the oil film processor, putting the oil film into the filter, absorbing it b using the filter cotton in the filter and decomposing the oil by nitrobacterium. 2 You can collect the oil film into the cup and pour it away. 3 You can remove it with a oil-absorbing sheet which can be put at the diagonal part of the water outlet (oil-film aggregated area) to absorb the oil. 4 You can install the trumpet funnel commingler which can absorb the oil film into it, mix the oil with the water and absorb and decompose it by the filter cotton in the filter. 5 You can clean the dirt in the filter.
