Thanks Alona I did gets those from Petsmart. Funny thing is that I just bought some brownish lava rocks to replace the colorful ones to make it more "peaceful" and natural, but can't bring myself to change the colorful ones!! What I love about the fake ones I have is all the little holes for them to swim through and hide. I think I will leave it like that for a while...
In order to put my lava rocks to good use, I bought a 36 gallon bow front and put them in there! Now I have no guilt