Kinda new to hydro, need help diagnosing the problem.

600 watt cool tubeTent Temperatures stay between 70-80 degrees 20 gallon res / Res temps around 70 degrees sometimes gets a little warmer and needs to be dropped.p/h staying around 6.0-6.5 has raised a couple times and needed to be corrected.It's an aero set-up with sprayers being on a 15 min cycle.Using technaflora line of nutrients/have ppm and ph meter, also ph testing strips.I'm new to hydro so i have no idea what the problem is and what i have tried doesn't seem to be helping. It all started with what i thought to be nitrogen toxicity with leaves yellowing starting around the edges of leaves, and the veins staying dark green. I was pretty positive and kinda knew i went to hard of the nuts, so i cleaned the res out and added new nutrients at a little lower ppms. I used MagiCal to supplement for r/o watter, but not sure if i added enough. Also used Bc Boost and Bc Grow for the veg nutes. Now the plants tips and edges have started curling upwards and yellowing/dying around the tips. I'm thinking it could be a magnesium def but some of the other leaves confuse me.Nutrient Line.Ph up/downBc Boost, Grow, BloomSugardaddythrivealive b-1MagiCalRhino SkinPictures aren't the best right now, i'll get a couple better ones in the next day or soWould love any help on getting this solved and my babies back happy and healthy, thanks!

sorry for the weird paragraph, was not intended that way lolit was very organized and layed out guess it messed it up

Looks like nitrogen toxicity with some burn as well, but it's hard to tell with those pics. It'd be nice to see a shot if the whole plant.