Multi Strain w/ 600w Hortilix Eye HPS

This week I switched out my old 400w Hortilux Eye for a new 600w bulb. It was time to replace it but tried to get a few more miles out of it in early flower until it started cutting out. This is my first grow under a 600w (previously only used up to 400w) so hoping for a commensurate increase in yield, density and overall quality. Having an issue with powdery mildew this grow which is strange since my humidity is consistently around 40%. Never had it develop indoors before but it was a real problem outdoors this past summer. It was advancing quickly on the Double Chocolate and Blue Gelato 41 so all plants were aggressively defoliated and sprayed twice with diluted hydrogen peroxide which seems to have cleared it right up. The exhaust system timer was adjusted to vent the room 2x more frequently. OG Kush and Holy Grail Kush were not affected. The Holy Grail has been vegging for several months and has grown quite tall so using the ScrOG net to control her height and maximize light exposure. Cruising into week 4 now with some nice flowers beginning to take shape.