Going to buy sand today to put in my puffer tank, have not had any sand bottoms before and not sure how to go about this. Shouldn't have a problem scooping the gravel out but wondering if I can just put the sand in without clogging filter or upsetting puffer. Will the sand go right to the bottom or does it take awhile to settle? Another thing I'm wondering is when I clean the tank if the sand is going to get sucked out..... Can anyone please educate me on this cause want to get it done this afternoon......