ummmmmmmm
not that long but i used a lot of my old rock and some sand
i had my 80 glln die out due to an unfortunate sea urchin death
*****do not ever get a sea urchin***********
********or when it dies take it out immediately!!!!!*******
i am going to get a blue hippo.. favorite fish ever!!!
i now am thinking about a porcupine puffer they are really really cute