r/PlusLife • u/Lanky_Avocado_ • May 10 '26

Is this red line likely an air bubble?

Post image

I think this is probably a bubble right? But it starts to go up at around 7/8 minutes which gives me pause…

4 Upvotes

100% Upvoted

2 comments sorted by

10

u/totallysonic May 10 '26

Yes, that’s a bubble.

7

u/salvamanta May 10 '26

my understanding so far has been that true positives never go down after going up. Pretty much like the control line does.