Hey guys I'm new to the sight but already have learned so much. I'm sure this has been covered but I will ask anyway. I have found several 100 ft. of 1/2" and 1" pvc that is free for the taken. My question is is the 1/2" and 1" big enough and also how tall should they be, and how far apart. Is there a specific design that is best or should I be creative. Thanks in Advance.