Hi Fozzy
Since this is the first grow let me just say I hear people saying between 5.50 and 6.50 , it is BEST at 6.00 because MY OPINION the ph can now fluctuate up or down and you're covered. With my dwc grows the temps can get chilly and in the morning my ph at 6.00 when the lights go out and by morning the ph is at 5.80. Hot weather also changes the ph stress from the plant changes it.
If you can be consistent with keeping it at 6.00 and not over water, or let it sit in water you have a fantastic crop.
I'm growing a strain that doesn't like ph'd water sprayed on it and had little spots on a leaf .
I do like the K.I.S.S acronym (keep it simple sexy!)(never liked stupid) don't add anything extra until you do 1 grow .
Have fun with it!