I'd suggest taking your next round of PF cakes and grating them up with a cheese grater then spawning to coir / black kow or other composted shit.
Much higher yields if/when it works, and less fuss than cakes.
Just a thought.
I did cakes for over ten years - they certainly get the job done, but I like having plenty for micro dosing, so a few bulk tubs here and there are a lot easier than all those cakes, even if you factor in some contaminated cakes.
Something to cogitate,
Edited by Soliver, 01 December 2018 - 12:17 AM.