Strawberry Cough - Newbie DWC

Flipped lights to 12/12 on d32 from seed, F number in picture descriptions reflects that, not actual time of starting to flower. Light slowly increased to ~85% @ 16" now, shooting for ~34mol dli So far she has been a dream to grow, taken to topping and LST as well as I could hope. Got about a 2'x1.5' of flat flat canopy at day 40 from seed, I'm super proud of that. Between light limitations and the middle branches starting to peak up above the canopy I think that does it for the LST, it's time to let her grow up! Pruned the odd fan leaf or shoot through the week but she's filling out so nice I didn't need to do much beyond adjusting the tie downs. Need to keep better track but after 2.5 days I added the better part of a gallon to top off the res, thirsty girl! New growth is coming in a bit lighter green than I think I want? My top off solution was lower on N, Ca and Mg than usual jacks 321, I should have waiting until she started to bud up for that, so I spiked her res with a touch of calcium nitrate and epsom. Planning on a res change to a higher P mix for a week once she starts to pop buds.