I recently bought a drilled 125 and would like to build a sump/refugium under the tank. An overflow box is included that fell off the back of the tank so I cleaned all the old silicone off and plan to reattach it. Before I do, I want to get a good understanding of how the plumbing will work as this is my first time using a sump.
I know the basic layout here - the two holes where the overflow will be are the intake from the tank to the sump. The two higher points are where the water returns to the display. What I need help with is "how"? What sort of pump do I need to buy to properly return the water? If I bought a prebuilt sump package would it include everything I need? I'm thinking maybe I ought to go that route being this is my first time using one.
I have attached a few photos for reference. Appreciate any insight!
![125plumbing3.jpg 125plumbing3.jpg](https://test.reef2reef.com/data/attachments/1135/1135597-22ac2e829202b835b53eb84c3ebb9d30.jpg)
I know the basic layout here - the two holes where the overflow will be are the intake from the tank to the sump. The two higher points are where the water returns to the display. What I need help with is "how"? What sort of pump do I need to buy to properly return the water? If I bought a prebuilt sump package would it include everything I need? I'm thinking maybe I ought to go that route being this is my first time using one.
I have attached a few photos for reference. Appreciate any insight!
![125plumbing1.jpg 125plumbing1.jpg](https://test.reef2reef.com/data/attachments/1135/1135595-15ce394ebcd32c59634063f84c6b86cf.jpg)
![125plumbing2.jpg 125plumbing2.jpg](https://test.reef2reef.com/data/attachments/1135/1135596-e03fbbe58aaef63ccf1c0d5cf4454092.jpg)
![125plumbing3.jpg 125plumbing3.jpg](https://test.reef2reef.com/data/attachments/1135/1135597-22ac2e829202b835b53eb84c3ebb9d30.jpg)