Coolant rises after turning pump iff

[AlenNN]

I just got my loop sorted out and ran into a problem. My reservoir coolant level rises afyer i turn off the pump. Its starts leaking after a while. Picture of the loop aswell 

[W-L]

1 minute ago, TheRapidGamer said:

I just got my loop sorted out and ran into a problem. My reservoir coolant level rises afyer i turn off the pump. Its starts leaking after a while. Picture of the loop aswell 

If it starts rising to the point of overflowing out of the res unit you have a trapped air pocket in the loop. Most likely it's stuck in the rad, your best option is to move the system around and shake it to try and dislodge it so it makes it way back over to the res. 

[AlenNN]

1 minute ago, W-L said:

If it starts rising to the point of overflowing out of the res unit you have a trapped air pocket in the loop. Most likely it's stuck in the rad, your best option is to move the system around and shake it to try and dislodge it so it makes it way back over to the res. 

Just tried again no leaks forgot to fill the res to the top.

[KenjiUmino]

the reservoir is at the lowest spot so i guess everything that is in the pipes and the cpu block (basically everything from the radiator connections downwards) is flowing back into the reservoir when the pump is off. 

[AlenNN]

4 minutes ago, KenjiUmino said:

the reservoir is at the lowest spot so i guess everything that is in the pipes and the cpu block (basically everything from the radiator connections downwards) is flowing back into the reservoir when the pump is off. 

Didnt even fully tighten the lid on the res...rookie.

[Bananasplit_00]

mine does too ever so slightly, its because there is a bit of air somewhere i think, but its really not that bad in my case

[Tam3n]

I got pretty large loop and I have three pumps that generate good pressure. After the initial filling with res top port open, the water level drops alot when the pumps are started and rises after they are stopped. This is probably because the small air pockets in the loop compress and soft tubing expands slightly under pressure. However, once I seal the res top port, the water level remains the same. This is because the loop can no longer freely suck air into res to fill the displaced water volume.