Susunlah langkah-langkah ini dengan baik dan benar !
1.Then,spread the gravels over base of the tank
2.Now,add a jug full of pond water
3.First of all,put the gravels in a net and pour a jug full of water on it
4.Next,add some water plants from aquarium center
5.Finally,add a few water animals you have collected from loval ponds
6.After that,fill in the tank about half way and pour the water gently from a jug
7.There is your own aquarium ecosystem! Place the tank in bright light,but not in direct sunlight