Most people use peat/sand or peat/perlite in a 50/50 blend but I've been using peat/cherrystone turkey grit for my few dews and pings. The grit being a tad larger keeps the peat more open and allows it to breathe. Perlite seems to attract algae, just like peat generally does but I'm interested to see if a more open peat mix won't foul as quickly. I consider a year in peat without needing to repot as being "successful". I really don't like peat. Basically if I want to be safe I pot most CPs in Long Fibered Sphagnum Moss.
This from Lowes: