hey up , just a question 4 u lads. a farmer friend of mine as gave me sum pot pipes. there bout 4ft long and 9-10 inch wide.im going to make a artificial earth with them.i know its important too choose a area thats not going to get water logged.just wondering if [NO TEXT TALK] could gi me sum advice on depth , how long shud i make it and how many chambers to add. cheers