Drilling back of tank. Should return be in line with drain above or below.

[lacrosseboss18]

I’m looking to drill a tank and will have 1x 1” drain and 1x 3/4” return line.
where should they we in relation to one another.
should the drain be above below in the middle or somewhere in between.

 

[theMeat]

Personally would put the drain on one side of tank and return on the other side. Would also drill two drain holes, diameter depending on what works with a ghost overflow that’s chosen

 

[lacrosseboss18]

only able to accommodate 1 of each

yes they aren’t going to be next to one another they will be part. But where in relation to one another should they be height wise.

 

[dedragon]

the return should be just at water level (if using locline) and the overflow a little below waterlevel, but i wouldnt run 1 drain either. I did it before and it causes water level to fluctuate and high amount of noise compared to bean animal or herbie overflow with 3 or 2 drains respectively.
What size tank are you drilling?

 

[lacrosseboss18]

Similar to why I was looking to do.
ideally yes would have multiple drains and returns

it’s a low flow for a clownfish tank