rollntider
Fish Herder

I used
1- tube of silicone ( $ 3.00 aquarium grade of course)

2- 1 1/4 flower pots ($.42 american)
1- 1 1/4 PVC elbow ($.48 american )
1/4 lb of gravel
I glued the flower pot to the end of the PVC and glued the other flowerpot to the top , and glued gravel to it...instant Krib cribs. They can always rent the upstairs out.