Let it go for a couple days, but if it is upwards of 5 then you're on the right track (typically orange with the pH drops but it depends on the brand).
Raw un-aerated Earth Juice solutions can easily measure a pH less than 4. I say anything above 5.0 is acceptable in most instances, and so long as there is enough dolomite in the soil.
When you're going to water I would recommend using just a bit of plain water to start. Wait about half an hour and then water in your nutrient solution slowly. Even if it was let's say 5.2 or whatever, the run-off should be coming out higher than that (6.1-6.8 or yellow/green) and in my experience it should. Just be sure that you use more dolomite in a couple of weeks.
I feel that watering slowly ensures that the run-off that drains out of the pots isn't pure fertigation solution. Also when the soil is really dry you could be harming the roots by suddenly unleashing upon them a strong solution, and chances are it is going to run through the containers very quickly. Remember that a wet sponge absorbs more water than a dry sponge, and the same should apply to your soil.