I know there is a formula out there, and I'm not going to pretend to be well schooled in Physics (even though I've taken it like 4 times, for personal best of C- or something).
How much flow will a 1 1/4 PVC tolerate in a Herbie style drain.
My (current) delema is on sizing the overflow box.
It will be easy enough to measure out a PVC 90. I think a 1 1/4" 90 with a bulkhead, had a profile of 4 inches.
I'm only planning on using a Mag 7 or 9 TO START! I would like to leave myself the adjustability should I decide to ramp up flow.
Would I need, or would it be prudent to have the box made big enough to handle a "Double Herbie"? Would, one, 1 1/4" Herbie handle the flow should I decide to get into a bigger pump?
Drilling the tank a second time, AFTER it's set up is NOT an option, so I need to get this right peeps.
Your help is greatly appreciated!!!!