wow. thanks for the info... this helped me out too..lol. I have river rocks currently, but i'm thinking about switching and going with sand, because it took me forever to filter out all the debris that was trapped in between all the river rocks... i will keep a couple piles of river rocks for Squirt (on top of the sand) for him to move around and play with, but not all over the bottom. i didn't know you have to stir the sand every few weeks, so thanks for letting me know before i go and find some sand and do my change.

Also, does anyone know the best type of sand and where to get it? I know there is Quikcrete (sp?) but should it be medium? fine? etc. and how much will i need for my tank? i wanted tan because it would look really sharp with the background that i have...

( i just did a total cleaning of my tank and all the rocks tonight, so i'd like to get the sand and convert it over sometime tomorrow.

thanks.