I'm plumbing a new tank with an Eshopps Eclipse overflow (medium size, 2x 1" drains). I've drilled/installed two 3/4" return lines and the 1.5" main bulkhead for the external overflow. I could use advice for the actual drain plumbing within the external overflow box.
I am debating whether to install a 180 degree turn like a Durso or leave a straight drain. The official Herbie documentation says a 6"+ difference in height between the siphon and emergency drain is required - which seems to argue for a simpler setup with the drain right in the bottom of the overflow and a riser for the emergency drain.
Which of these two setups looks more correct?
1) Straight drain
2) durso style 180
The rationale for 6" of difference in height seems to be giving yourself room for fluctuating water levels when you're adjusting the siphon drain vs. the return flow. Any advice appreciated.
I am debating whether to install a 180 degree turn like a Durso or leave a straight drain. The official Herbie documentation says a 6"+ difference in height between the siphon and emergency drain is required - which seems to argue for a simpler setup with the drain right in the bottom of the overflow and a riser for the emergency drain.
Which of these two setups looks more correct?
1) Straight drain
2) durso style 180
The rationale for 6" of difference in height seems to be giving yourself room for fluctuating water levels when you're adjusting the siphon drain vs. the return flow. Any advice appreciated.
Last edited: