to high runoff?

hey, im on my first coco grow now on day five. i water my plants with ph 5,8 but the runoff is like 6,5 im using cocomix from biobizz and on the bag it says that the ph in the coco is 6,1, so when the water is 5,8 and the coco is 6,1 i was thinking something in between. this is my second watering since i repotted them 5 days ago from my rainforrest in to 4,5gallon pots(not the best thing but wanted to try coco insted).

so shall i just ignore it or do something about it? if so what?