Blueberry, Girl Scout Cookies,White Widow, and cantaloupe haze

I had to top Cantaloupe haze and White widow as they were too close to the lights and I didn't want to loose any ppfd on my lowers. My GSC seems perfect for not topping. next time I would top those strains at least once. I have been flushing the CH and getting run off around 1200ppm which seems like the max she can take the others like it stronger so I have been flushing them every 2-3 days. CH is tough to keep happy but will continue to monitor. All plants are in week 4 of flower 12/12 from seed.