Thanks guys :-) I feel like such a noob but by floater, do you man floater valve that controls water level?

I just thought of another question! I hope you guys know the answer. I was checking out these net pots on a hydro shop website which are already in a lid that fits a standard 5 gallon bucket. There were a few different ones, a 6 inch net pot, 8 inch, and 10 inch, all fitting the same bucket size. I called the store but the guy didn't seem to know his ass from a hole in the ground. I mean, really what's the difference between the sizes? The roots are going to grow down into the bottom of the bucket and form a big mass under there anyway. Is there a point to having a bigger basket? Does it really make much of a difference?