Jerico, You could do that, but I wouldn't stress over it. IMHO the ideal pH is 6.8 for soil, but soil's a whole lot more forgiving than hydroponics. pH will dictatae how available the nutrients are to the plant, so watch the plants. If you see signs of a deficiency, then start addressing it. Nothing is gonna happen overnight, and the plants aren't gonna die in a matter of hours, so you'll have plenty of time to address any issue that may come up. You ARE using organic nutes aren't you?