Yesterday we hooked up our band new Hayward XStream cartridge filter and Hayward 2 speed Power-Flo Matrix pump, along with our intex SWG. Everything looks good, quiet, water circulating, but no psi reading on the filter gage. I didn't find anything in the manual as to what the psi should be reading or how to troubleshoot if the needle is not moving. I sent an email to Hayward, but have not heard back from them yet. Maybe the needle at 0 is a good thing? Any ideas?