This is a fun grow competition!
I do have one thought, just hope I don't come across in the wrong way though...
I'd really recommend not usually clear / transparent bottles for the grow.
Roots grow in the dark, they don't like light.
The root zone and medium is also moist, and when light gets to the moisture, it will grow mold / algae / fungus.
That mold will grow over the roots, and also suck out all the oxygen from the root zone.
Not to mention just maybe eating into the roots themselves.
Back in when I grew indoors, I used to use cut down 2L milk bottles for my clones and vegging plants.
Those bottles were slightly transparent / clear, and even that led to some of those problems.
I learned my lesson, and would only use opaque / non-transparent material now.
Grow on, my friends!
