OK, this will probably be my final revision...
I've added Herbie overflows and a larger refuge.
A - 3/4" overtop PVC return manifold
B - 1" bulkhead and strainer leading to external overflow box
C - 1" Herbie backup overflow drain
D - 1" Herbie drain and strainer
E - External glass overflow box
F - 1" Spaflex backup drain pipe (left)
G - 1" Spaflex drain pipe
H - 3/4" Spaflex return pipe
I - 1" Spalfex drain pipe (right)
J - 1" Spaflex backup drain pipe (right)
K - ½"gate valve teed off from return
L - ½" Spaflex refuge feed from return
M - 20-gallon glass refuge
N - refuge light
O - 1" drilled bulkhead/refuge overflow
P - 3/4" Spaflex refuge drain
Q - 3/4" Spalfex refuge backup drain
R - 20-gallon glass sump w/ large return area
S - Baffles more than 1" apart
T - Eheim 1262 return pump
U - AquaC EV-180 protein skimmer
V - Drain area with filter sock
* White pipes are dirty tank drain water
* Grey pipes are clean return water
* Pink pipes are backup only and won’t usually have water in them
