1. First, prepare all the tools, put the tools and small fish and shrimp away, and put the washed empty bottles in the middle of the table. First put the aquatic plants in an empty bottle.

Secondly, slowly pour the grass mud into the bottle. Be careful not to pour it out. Let the grass mud cover some grass roots.

3. Pour the white stone into the bottle. Cover with grass mud. The layering will be beautiful. See the video for the pouring method. Put in microbial balls.

4. Pour a certain amount of water (about half), and then scoop the small fish and shrimp into the bottle with a spoon. Generally, two small fish and two shrimps are put in an ecological bottle within 500cc.

Finally, pour the remaining water into the bottle. If you don't fill it in, leave a little space, and an ecological bottle will be finished.