im not a hydro guy to start but i do know a little and i would start getting a more consistant ph thats alot of fluxuation the highest you want it to go is about 6.2 i believe. so not only is it high but fluxuation confuses and stresses plants

lets see if a hydro guy rings in but there is a start

i keep my 1000w 10 in from canopy at all times from clone transplant through flower