My preference for coco coir over perlite is pretty strong at this point!
My problems in the past with perlite were really due to not sifting the fines out and the cuttings inevitably loosing oxygen/aeration from compaction of the small particles.
I sifted all my perlite through an aquarium screen with 3/8 holes this time around it made a huge difference in aeration.
Even with this sifted perlite the roots aren't in as close proximity to each moist particle of the medium as they are in the coco...in coco, this equates to tremendous primary and nearly equal secondary roots forming very quickly.
I am using Canna Vega fertilizer right now about every 4 days or so...i will be adding some Microbe Life Vitamins & Aminos brand Micronutrients to make sure the plants are getting plenty of calcium, magnesium, boron etc. as i have been using Reverse Osmosis water which is void of these in significant amounts.
Judging by RichinNJ results with Canna Vega id say the micronutrients might not be necessary but i dont plan on transplanting these to soil till spring so thats a long time to go with only macros and i don't want any deficiencies to arise.
The online Marijuana Growing community has a tremendous amount of coco coir grow info!
Cutting varieties currently: Unknown Portugese, Unknown Possible Black Ischia, Sunbird Unknown, Lillja Green unknown, Black Madeira, Tarantella, Unknown Green Caprifig, LSU Tiger, Alma