I use:
FFOF
Pro-mix HP Myco
Alaska Veg & Bloom
Super Thrive
FF Brew
Molasses
Never had my plants lime out or show any burning at all, infact they out grew the 1 gallon pots I put them in, in 12 days ( roots reached the bottom drain holes and peaked out only to find sunlight and air-prune back ) and then from there I move to 5 gals and they reached the drain holes again in 12-14 days. Seems to me that they are happy and looking for more but unfortunately 5 gal is as big as I can go for fear of having the top of my GH popped off.
FFOF is 15.00
Pro-Mix is 30.00
Alaska 1gal is 16.00
Bloom 1gal is 12.00
Super Thrive is 10.77
FF Brew is 17.00
cheeap