Thanks for the reply, atleast they will work. And you are right, I bought 4 pounds of hydroton and it wasnt enough to fill one it was about 75% full so I bought 10 more pounds today along with a propagation dome which comes with 1.5" rockwools which is why I was concerned about them being big enough. Anyone else who ever asks the same question as me will definitely know 10" is a bit overkill. But who knows, bigger pots, more roots more fruit right?