I'm just in the planning phase of my first build, a smallish IBC media system. I recently got Murray Hallam's DIY video and I'm modeling my system somewhat after that.   Today I have been on a search for an outlet to obtain PVC fittings and parts. I'm coming to realize that some components are kind of pricey and I'll need multiples of certain parts. Bulkheads are what comes to mind but there are…