A couple of seasons ago, I bought a big bag of Growstones. I like chunky perlite, but the Growstones were really big.
On the Peat, do you wash/rinse it a lot? At the hydro store, the good peat stuff (washed/low salt) was really pricey. I still have a bunch of Peat Blocks that I bought from Earth Box early on; the hydro store told me just to rinse it a lot.
Ricky - I bought these once and they don't break down.
http://www.greenhousemegastore.com/p...growing-medium
I found there is a sweet spot in the shipping cost at GHM; just play around with what you are buying.
How come you don't reuse your mix? - I'm going to dump a bunch of mine in the raised beds, but solarize all the earth boxes.