Page 18
Typical Pebble Layout for Shallow Custom 16 and Custom 18 Trays
K
K
K
K
K
K
C
D
D
C
C
D
C
C
D
D
C
C
D
C
D
D
E & J PEBBLES
EQUALLY
PLACED
H PEBBLES
AERATION TUBES
K, A & B
PEBBLES
FIRST LAYER
SECOND LAYER
C,D &F
PEBBLES
G PEBBLES
FRONT AND SURROUNDING LAYER
TOP LAYER