I have a 16 x 32 in ground vinyl liner pool. Pool has wood side walls and a aluminum enclosure. The pool is 33 years old and just had the 3rd replacement liner installed. There was no wire installed under the concrete. The electric motor on the pump has a ground rod and is grounded ,also the ground inside the pump is tied to the house ground in the main electrical box. I have read the aluminum enclosure should be grounded also. Should I try to ground the enclosure?