Anyone ever seen this?

[lukebro]

On one of my clones from the bubble cloner, I'm noticing some blue on a few of the roots. Anyone ever experienced this?

Also, should i just snip off the stems below the roots that arent growing anything?

Help is much appreciated

 

[Jackalope]

Not a clue lol. Kind of weird but the roots look healthy. Leave the bottom on no need to disturb things now. I have never heard of trimming the bottoms off.