Drill a siphon break in your return lines?

[Hustler]

My returns are 1 1/2"

[lastlight]

Wait so you're saying that all the water that flows down from the display during an outage is going direct to the city sewers? You have no room to handle the 10 gallons?

[Hustler]

Any excess in the sump...2" give or take goes down the drain before it hits my floors... I used to run a constant drip with the freshwater like an auto water changer so now its a fail safe.... but maybe at the cost of a return pump in an outage...

[no_bs]

Any well built sump can handle all the back flow. Why so complicated?

[Hustler]

it wasnt designed for a 100 gallon refuge lol... that changed everything....
Instead of dealing with a total square footage im now dealing with the bubble trap at the end....and thats like 20 gallons a foot give or take x2 lol