pH in flower?

[Illusion]

Just switched my plants over to 12/12 today, pH is about 5.9

If I remember correctly the pH is supposed to be lower...
What's the ideal pH range for hydroponic plants in flowering?

[Weedhound]

There are different schools of thought but I keep my ph the same.....5.6 to 6.2 and have never had problems with it.