black	cone	tank
0
0
8	0	0	-0.55
	0	0	0
	.185	.235

#black	ring	bottom_tank
#0
#0
#8	0	0	-0.55
#	0	0	1
#	0	.185

white	ring	bottom_tank
0
0
8	0	0	-0.55
	0	0	1
	0	.185

water	ring	water_surface
0
0
8	0	0	-0.14
	0	0	1
	0	.232

!xform -n filter -t .8 0 3.863 filter.rad