Thanks Rusty Trich.....I use AN Connoisseur, along with MEST, B52, Voodoo, Tarantula and Piranha (veg and 2 weeks into bloom), Sensizym, Big Bud, Bud Candy, Humic and Fulvic. I usually keep it around 2/3 strength of what AN recommends, as I have found this to work the best. I ph every feed and every water to 6.2-6.3 (My source water is from a spring, 6.1ph and 70ppm). I've been running the same nute schedule for the last 5+ years....and keep in mind that this only affected 1 strain running right alongside another that didn't show it AT ALL. I've got multiple 4x8 beds in 2 rooms....and this issue only affected 1 strain. It happened to be a mixed bed and the Cherry Kush had the issue while the Sour Diesel was clean. It definitely affected yield, tho it was still a decent harvest. No bugs in the plants visible, no bugs on sticky traps. My room is always around 78f in the day, 68f in the night. Humidity is 50-55% in veg and 45% in bloom. Vortex fans for (Filtrete filtered) intake and (Phresh-filtered) exhaust. Multiple wall fans...they've always been great producing rooms, but this is something new I've not seen before.