[Build] Conduits towards darkroom

[Ian Atha]

Hey Jim,

(I'm not sure if jim at well.com is The Jim so I'm sending this to the
list too to ensure coordination.)

I installed a few more conduits towards the darkroom. I also made a
90deg bend to a pipe but I didn't install it--it's in the storage
closet instead.
The segment between the preexisting pipes and the skylight made the
pipe kind of awkward but it's pretty straightened out at the end, I
think. Hope I saved you some time.

ian.