yes,means there is not a big mass of nutes in your coco.could be either your plant is eating well or you are draining off nutes you have been giving. in coco, unless you have a nutrient related problem, it is not necessary to do a pure watering session between feedings,it just flushes out the nutes.optional of course but I would just feed feed feed if plant looks good. coco is made for frequent feeding. in case nutes build up in your coco, EC would increase and increase.