Plastic bottles can be drilled directly with an electric drill, or they can be tied with electrothermal high-temperature objects. The former is universal, and the latter requires the melting temperature of the material, which is not easy to burn, but it is still feasible for plastic bottles. You can also iron it with a pointed electric iron, or burn it on the fire with a suitable nail. The manufacture method of that isolation box is as follows:

1. Find a mineral water bottle or a drink bottle, and push the mineral water bottle first. Because of the groove, it is relatively simple to drill small holes, and it is also very easy to align to form parallel planes.

2. When we make our own peacock fish isolation box, we can use it to make small holes in the groove, and it is best to align them, so that we can make a neat net when threading later.

3. Use fishing line to penetrate the net, and at the same time cut teeth under the fishing line to prevent the circulation of water.

4. put it in the fish tank and you can use it.