I tried to use the sand in the old aquarium. Did not work, Walle soon began to dig in the sand, threw sand everywhere

. He seemed very happy doing it, but not like I have let him do that in large aquarium.
I'll try to leave the bottom of the aquarium with nothing. I'll just put some big rocks where there is more silicone burr. Not to be white styrofoam appearing'll put a panel (with the image of rock I think) under the aquarium. This weekend I must make this change.
I bought some large stones of granite, they are black and white. I searched the internet and one did not see anything negative about their use in aquariums. but it never hurts to ask. It's okay to use granite?
But although the sand did not work out I'm very happy. Walle already making the position of super-man in the basking area. He jumps into the water you hear a noise or someone appears in the room. But I was watching it for about 5 minutes without him seeing me, when I saw jumped into the water. I do not know if he jumped scared or come ask for food. Anyway I am glad he is already getting accustomed to the new aquarium.
