Welcome Mike , no doubt there will be lots of questions later on , what fish are you going to keep koi or goldfish and do you know the size of your pond yet 4ft deep is the shallowest for koi 5ft is perfect
We ourselves have 27 years experiance with koi others with goldfish butmore importantly we are all willing toanswer your questions and sort of mentor you through the initial first year
.which can be a very steep learning curve for some.
No matter how dumb you think a question is dont be affraid to ask we can always put you right.
All that remains is for me to say welcome from across the pond in the UK Plymouth to be exact
Dave