I'm thinking after my plants finish blossoming out I'll go semi-hydro. I
have 3 den. 2 onc. 2 phal. 1 miltonia all in 4 in pots. Are all of these ok
for S/H? What size pots should I buy? Should they only be plastic? And
what amount of clay pellets should I buy to pot them in, and at what grade?
Also where should I buy (I prefer online if the price is right).

Thanks
Chris