ok, this is a pic of the RIGHT SIDE UP ones.
i forgot to say:
the larger bottles have a diameter of approx. 8.5cm and 6cm for the smaller ones. The diameters are the same for both the upside down and right side up ones. I just thought this would be useful coz i mentioned more debris in the right side up ones. I'll upload some pics of the inside (birds eye view) of the plant so you can see the grass growing and stuff.
Anyway, in case you're wondering, the pic was taken on my blacony and not where they were positioned for most of the experiment. I just brought them up so i could measure them and take pics and stuff.
I think i mentioned before, peas like plenty of sun, esp morning sun, so thats where i positioned all my plants.