Ph runoff is 4.9 advice??

Is this too low? Just switched from tap (430ppm 7.9ph) to a new r.o. system (3ppm 6.5ph) because I was told that the tap was way too high. It would explain a lot of the problems I've been having with this and previous times. I tested the runoff of the feeding today and it was 4.9, seems like it should be higher. Just calibrated my PH meter and batteries are fresh so I know it's good.

I don't know if I can fully trust the test though because I did not catch the water directly from the pots. Rather I just tested it straight from the water catch, which I usually just leave until it evaporates. Hope the picture helps show what I'm talking about. Any advice/help is appreciated. Thanks.

Personally, i don't bother testing runoff unless i see that the plants are showing ill effects. If they're happy and green then i just let them do as they like to do.

They're looking much better since switching to r.o. water. So I guess I'll just not worry too much. Thanks

I personally find from reading the forums that we as humnas have a tendancy to make issues out of nothing. If they're looking great then they're probably feeling great

They look good to me, those bottom leaves usually take the brunt of the damage and may just be leftover effects from the too high PH.