In plumbing up my 220 I have gone round and round about how I'll be placeing pipes. Currently I plam to have one on either side, back corner going all the way to the bottom. There are 2 ways I am thinking of hidding this. 1st is to rough up the out side of the pipe, then use pvc glue and glue sand and crushed coral to the pipe. I did this to one pipe already, and it looks cool, but not really natural. Better than the pvc pipe, but not natural. Last night the thought was to take a 1.5 piece of pvc drill holes in it, and stich small rocks to it. Placing the 1" pipe inside. What do you think?