Originally Posted by Chesherca
Perhaps you've found a new way to do a fishless cycle! ;)
Yeah... apparently the stuff gives off ammonia and something else when it cures.
That said on to pictures:
Here are the two pipes. They are actually two feet long per pipe.
One of them was cut in two. I hand sand papered each side on all the tubes and used my rotary tool to sand down the edges (I don't know how well you can see it)
So I used a brush and the silicone, then spread the sand onto my ends. I've put plastic leaves from an old fake plant on to use as guides. That way they are a good visual reminder of where the openings are once they are sunken down and covered in sand. Most of each pipe will be covered by sand save the ends.
I've got them on my bed, I'll be taking them into my work room soon enough. Once they set for 24 hours they will be submerged in water for a few days till Sun to help get rid of any left over residue.
To be clear the white part of the PVC pipe will be covered with sand. I'm sinking the pipes so that it doesn't take up swimming room/scooting room. The ends that I covered in sand will be seen though to serve as exit/entrance holes.