soil growing - use a pan instead of a pot?

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I put the scrog under the 150 on the top right soon to be 250. Thats a 400 on the left. It's a C-22 but the newer one.lol:rasta:

i had 6inch tall plants in 4inch pots,2inchs styrofoam,on bottom,a couple inches prefert. soil on top,usin 7.4 water ph,no problems plants very healthy,not just green and growin slowly either.then moved to larger pots. peaced buthead bros./zzzzzzzzzzz