Think Different 1st coco grow

Hey guys I started a new grow not long ago, was interested in autos so I choosed Think Different and gave a try in coco even tho I never tried indoor before, so here is my setup:
Grow Tent : Secret Jardin DS90
Light : Lumatek 250W HPS / 300W LED Mars Hydro (old model) - not in tent yet waiting till she starts flowering
Adjust A Wings Defender small
Exhaust fan : 235 CFM
Intake: 165CFM shold come any min
Air circulation in tent : 1 Tower Fan, 1 Clip on fan
Air humidifier

Lights ON - Ambient Tempreature is 26C
Tempreature on top of plant is 26.4C
RH 55-60%

Lights OFF - Ambient Tempreature 22C
RH 60-65%

Biobizz Coco
General Hydroponics Flora Coco
Cal-Mag

7gal smart pot

So I planted in directly in 7 gal pot which I think it wasnt greatest idea so have trouble watering a bit.
First think I did was soaked the Coco with Ph water 5.7 and added Cal-Mag, seed went from coco in 2 days after that I watered only with Ph water and added Cal-Mag every watering, after 2 weeks I added nutrients 1/2 strenght + Cal-Mag, I started to LST her at week 2, plant is now 3 weeks old
I watered her yestreday with almost full strenght + Cal-Mag after add nutes PH 5.6. (Still not sure how to water her properly :/ )

Sorry for jumping with photos from first week to week 3 :/ forgot to take pics..

Try keeping ph at 5.8, to water properly, water until run off and then don't let the plant sit in the runoff soaking it back up.
Water again when pot has got light but not totally dry. Once she's slightly bigger water as often as you want.
Run off is most important if your feeding full strength. Easy to get salt build up. Personally I never feed full strength these days

She's growing fast.

how goes the grow dude