Periodic care consists in cleaning the aquarium, caring for plants, partial water change. Once every three months you have to remove the cover glass, turn off all the devices, catch fish, clean the bottom. With a scraper or a nylon thread you need to clean the front glass from the raid of salts and algae. Then gently level the soil surface. Remove the old yellowed leaves and stems in long -planted aquarium plants. And finally, you can add fresh water. After that, return the fish back, now they are comfortable and good in clean and fresh water.