I have a few questions regarding materials. Safety rope - Plastic or nylon? Any special type? Electric splice - is there a goo to smear on inside the splice? Check valve - is one enough (at pump) two hundred feet lift. Pump controller - assuming the new pump rating & type is the same as the old one is a new controller required ? Pipe - Schedule 80 - twenty five years old - 20' sections with couplings. Is there any reason why this cannot be re-used?