I am in the process of building a pool/spa partially in-ground, concrete and brick construction, max dia approx. 17ft max depth 4ft, I have got to the stage where pumps can be installed, I have purchased one pump (sta-rite Dynamo 340197SR) I intend to install two pumps one for a waterfall, the other for a Jacuzzi area. The motors need to be bonded, as there are no exposed metal components in the pool my question is what do I bond them to? the pump house is situated approx. 15ft away from the pool wall, electrical supply is from the main house so grounding/earth is via a copper spike in the vicinity of the main control box. Any advice would be appreciated.