It been a while since I posted here. After learning a whole bunch with my first setup, running it for over a year and selling it off, I’m restarting the hobby.
This time around I have a 55 gal display to work with. I want to build a back-drilled Herbie overflow system. I have a 1200GPH overflow box and a Sicce Silent 4.0 (900ish GPH at 0 head pressure. My question comes down to sump capacity.
For the Herbie to work the primary drain needs to be at least 4” from the water surface. This mean when I lose power, 10 gallons on water will drain to the sump, correct? (4”x12”x48”). Im confident a 29gal tank can handle it but for some reason I can’t find one. Not even new. I might go 20 gallon long, but with varying levels of water in the various sump chambers how can I determine the left over volume? If I put 9 gal of water in there that leaves some room for displacement and then barely enough room for the 10 gallon dump. Is there any faulty logic here?
This time around I have a 55 gal display to work with. I want to build a back-drilled Herbie overflow system. I have a 1200GPH overflow box and a Sicce Silent 4.0 (900ish GPH at 0 head pressure. My question comes down to sump capacity.
For the Herbie to work the primary drain needs to be at least 4” from the water surface. This mean when I lose power, 10 gallons on water will drain to the sump, correct? (4”x12”x48”). Im confident a 29gal tank can handle it but for some reason I can’t find one. Not even new. I might go 20 gallon long, but with varying levels of water in the various sump chambers how can I determine the left over volume? If I put 9 gal of water in there that leaves some room for displacement and then barely enough room for the 10 gallon dump. Is there any faulty logic here?