Is this big bubble bad?

[DominicNikon]

Hello, is this large bubble on the top of my resivour bad? I've tried getting it out by rotating my pc with the top unplugged and I tried popping it with a zip tie but that just moved it and I can't put anymore fluid in. Should I just leave it alone? I've been bleeding my loop for about 24 hours and that's the only noticable bubble I can see

[jaslion]

The whole point of a reservoir is to collect bubbles and actually not be 100% full

[For Science!]

4 minutes ago, DominicNikon said:

Hello, is this large bubble on the top of my resivour bad? I've tried getting it out by rotating my pc with the top unplugged and I tried popping it with a zip tie but that just moved it and I can't put anymore fluid in. Should I just leave it alone? I've been bleeding my loop for about 24 hours and that's the only noticable bubble I can see

Just leave it, its fine.

[DominicNikon]

28 minutes ago, jaslion said:

The whole point of a reservoir is to collect bubbles and actually not be 100% full

It is? I thought it was for looks and making the loop easier to fill

[vf1000ride]

You need a small amount of air in the system to allow for thermal expansion/contraction with temp changes in the water, hardline more so than soft tubing.  If it was 100% full you could possible cause leaks when the system heat up and the water expands with temp increases but has no room to grow into.

[jaslion]

3 hours ago, DominicNikon said:

It is? I thought it was for looks and making the loop easier to fill

It's basically for pressure and thermal expansion reasons. 100% water fill can lead to leaks as there is no air to slightly compress just water

[DominicNikon]

7 hours ago, vf1000ride said:

You need a small amount of air in the system to allow for thermal expansion/contraction with temp changes in the water, hardline more so than soft tubing.  If it was 100% full you could possible cause leaks when the system heat up and the water expands with temp increases but has no room to grow into.

Oh that makes sense. Should I remove some of the fluid to give it more air?

[For Science!]

2 hours ago, DominicNikon said:

Oh that makes sense. Should I remove some of the fluid to give it more air?

It’s fine, just leave it  even if a bit of expansion the loop can take quite a lot of pressure. Air also can lead to unsightly residue in the reservoir and cause coolant degradation.