Kc33 root system

If anyone is familiar with kc brains kc 33 strain I'm looking for opinions on how much room you guys would realistically give its root system (in gallons)
Any imformation at all that you could share with me about the strain would be great as well.
I have no hands on experience with the strain but I do know it's a big sativa dominate plant that thrives.. I'm very curious about the strain and hoping to hear some real stories about it
 
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