What size net pots to use.

i use 2" from clone through flower and not a problem. pot size is not that big an issue, it is mainly for support.

Thanks, any advice on the cut out... Do I just use my 2" circle like I did for my clone machine?

i always use the 2" hole saw but what i found is there are 3-4 manufacturers of net pots and all are slightly different in size.some are a little smaller, some fit in perfect(but will need securing from falling), and some larger. i like the hydrofarm pots, they are the most sturdy made and the slightly bigger ones. they fit nice and tight and i have no problems with them toppling over or out without securing. 200 for $20 at plantlightinghydroponics.com.

Perfect I do appreciate the help.. good looking out.

With 2" pots you might need some kind of system to support the plants. A net, ties and hooks, trellis etc.
3" pots can hold a bit of hydroton (still not much) and are a little more stable. You still might want to throw out some netting with these.

Dont go bigger than 3"!

How big/how much rot growth do u get? I know Veg & Flowering time makes a difference just want to male sure that I have enough room for rots and my pots are big enough to carry the weight and be stable.
Thanks

go with 2"... with the 6 inch pvc you will have more than enough space for roots..... it will be fine, since you have the rails from the SB/SS system

pot size doesnt play a role in root size in aero. its for support.