Great grow! I'm following along.
Mr. Canucks grow is awesome. Love his method and am hybridizing/emulating it with my currents.
He waters at 6.8 though I think, and mixes in 50/50 of the two Gaia's and top dresses once in preflower and 70/30 in during mid flower as a top dressing I believe.
when i was prepping the coir i mixed in 100% of the 4-4-4.. then at 28 days i top dressed with 50/50 ... the next feeding i will do 100% of the 2-8-4. my water i have been using 6.6-6.8ph